./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3 --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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3 --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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:34:54,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:34:54,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:34:54,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:34:54,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:34:54,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:34:54,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:34:54,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:34:54,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:34:54,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:34:54,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:34:54,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:34:54,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:34:54,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:34:54,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:34:54,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:34:54,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:34:54,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:34:54,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:34:54,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:34:54,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:34:54,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:34:54,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:34:54,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:34:54,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:34:54,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:34:54,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:34:54,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:34:54,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:34:54,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:34:54,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:34:54,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:34:54,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:34:54,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:34:54,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:34:54,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:34:54,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:34:54,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:34:54,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:34:54,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:34:54,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:34:54,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:34:55,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:34:55,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:34:55,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:34:55,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:34:55,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:34:55,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:34:55,035 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:34:55,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:34:55,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:34:55,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:34:55,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:34:55,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:34:55,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:34:55,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:34:55,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:34:55,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:34:55,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:34:55,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:34:55,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:34:55,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:34:55,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:34:55,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:34:55,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:55,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:34:55,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:34:55,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:34:55,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:34:55,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:34:55,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:34:55,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:34:55,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:34:55,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:34:55,044 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2021-10-15 19:34:55,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:34:55,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:34:55,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:34:55,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:34:55,345 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:34:55,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-15 19:34:55,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/d6768e578/eec2812e13654b4199f610ab940d9acb/FLAG3103da94c [2021-10-15 19:34:55,962 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:34:55,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-15 19:34:55,968 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/d6768e578/eec2812e13654b4199f610ab940d9acb/FLAG3103da94c [2021-10-15 19:34:56,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/d6768e578/eec2812e13654b4199f610ab940d9acb [2021-10-15 19:34:56,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:34:56,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:34:56,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:56,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:34:56,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:34:56,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb4d4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56, skipping insertion in model container [2021-10-15 19:34:56,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:34:56,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:34:56,585 WARN L228 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-15 19:34:56,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:56,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:34:56,621 WARN L228 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-15 19:34:56,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:56,636 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:34:56,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56 WrapperNode [2021-10-15 19:34:56,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:56,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:56,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:34:56,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:34:56,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:56,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:34:56,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:34:56,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:34:56,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:34:56,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:34:56,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:34:56,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:34:56,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (1/1) ... [2021-10-15 19:34:56,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:56,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:56,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:34:56,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:34:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:34:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:34:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:34:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:34:56,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:34:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:34:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:34:57,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:34:57,161 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-15 19:34:57,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:57 BoogieIcfgContainer [2021-10-15 19:34:57,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:34:57,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:34:57,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:34:57,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:34:57,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:34:56" (1/3) ... [2021-10-15 19:34:57,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c2bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:57, skipping insertion in model container [2021-10-15 19:34:57,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:56" (2/3) ... [2021-10-15 19:34:57,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c2bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:57, skipping insertion in model container [2021-10-15 19:34:57,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:57" (3/3) ... [2021-10-15 19:34:57,171 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-10-15 19:34:57,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:34:57,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:34:57,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:34:57,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:34:57,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:34:57,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 43 transitions, 86 flow [2021-10-15 19:34:57,273 INFO L129 PetriNetUnfolder]: 16/43 cut-off events. [2021-10-15 19:34:57,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:57,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 43 events. 16/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:34:57,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 43 transitions, 86 flow [2021-10-15 19:34:57,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 39 transitions, 78 flow [2021-10-15 19:34:57,288 INFO L129 PetriNetUnfolder]: 11/31 cut-off events. [2021-10-15 19:34:57,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:57,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:57,289 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:57,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:57,294 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-15 19:34:57,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:57,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823389706] [2021-10-15 19:34:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:57,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:57,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:57,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823389706] [2021-10-15 19:34:57,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823389706] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:57,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:57,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:34:57,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137020643] [2021-10-15 19:34:57,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:34:57,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:34:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:34:57,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 43 [2021-10-15 19:34:57,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 39 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:57,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 43 [2021-10-15 19:34:57,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:57,485 INFO L129 PetriNetUnfolder]: 11/35 cut-off events. [2021-10-15 19:34:57,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:57,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 35 events. 11/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 4/28 useless extension candidates. Maximal degree in co-relation 35. Up to 5 conditions per place. [2021-10-15 19:34:57,494 INFO L132 encePairwiseOnDemand]: 39/43 looper letters, 0 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2021-10-15 19:34:57,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 70 flow [2021-10-15 19:34:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:34:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:34:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2021-10-15 19:34:57,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2021-10-15 19:34:57,517 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 80 transitions. [2021-10-15 19:34:57,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 80 transitions. [2021-10-15 19:34:57,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:57,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 80 transitions. [2021-10-15 19:34:57,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,533 INFO L186 Difference]: Start difference. First operand has 25 places, 39 transitions, 78 flow. Second operand 2 states and 80 transitions. [2021-10-15 19:34:57,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 70 flow [2021-10-15 19:34:57,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:57,543 INFO L242 Difference]: Finished difference. Result has 26 places, 35 transitions, 70 flow [2021-10-15 19:34:57,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=35} [2021-10-15 19:34:57,547 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-10-15 19:34:57,547 INFO L470 AbstractCegarLoop]: Abstraction has has 26 places, 35 transitions, 70 flow [2021-10-15 19:34:57,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:57,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:57,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:34:57,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-15 19:34:57,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:57,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279755866] [2021-10-15 19:34:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:57,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:57,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:57,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279755866] [2021-10-15 19:34:57,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279755866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:57,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:57,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:34:57,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466135285] [2021-10-15 19:34:57,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:34:57,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:34:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:34:57,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2021-10-15 19:34:57,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 35 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:57,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2021-10-15 19:34:57,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:57,749 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2021-10-15 19:34:57,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:57,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 47 events. 12/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 65. Up to 15 conditions per place. [2021-10-15 19:34:57,751 INFO L132 encePairwiseOnDemand]: 38/43 looper letters, 14 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2021-10-15 19:34:57,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 112 flow [2021-10-15 19:34:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:34:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:34:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2021-10-15 19:34:57,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2021-10-15 19:34:57,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:57,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,758 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,759 INFO L186 Difference]: Start difference. First operand has 26 places, 35 transitions, 70 flow. Second operand 4 states and 111 transitions. [2021-10-15 19:34:57,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 112 flow [2021-10-15 19:34:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:57,762 INFO L242 Difference]: Finished difference. Result has 31 places, 37 transitions, 93 flow [2021-10-15 19:34:57,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=31, PETRI_TRANSITIONS=37} [2021-10-15 19:34:57,763 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2021-10-15 19:34:57,763 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 37 transitions, 93 flow [2021-10-15 19:34:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:57,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:57,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:34:57,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-15 19:34:57,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:57,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961006858] [2021-10-15 19:34:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:57,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:57,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:57,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961006858] [2021-10-15 19:34:57,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961006858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:57,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:57,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:34:57,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824020562] [2021-10-15 19:34:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:34:57,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:34:57,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:34:57,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2021-10-15 19:34:57,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 37 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:57,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2021-10-15 19:34:57,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:57,910 INFO L129 PetriNetUnfolder]: 13/59 cut-off events. [2021-10-15 19:34:57,911 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-15 19:34:57,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 59 events. 13/59 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 91. Up to 18 conditions per place. [2021-10-15 19:34:57,912 INFO L132 encePairwiseOnDemand]: 38/43 looper letters, 16 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2021-10-15 19:34:57,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 143 flow [2021-10-15 19:34:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:34:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:34:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2021-10-15 19:34:57,915 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2021-10-15 19:34:57,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:57,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2021-10-15 19:34:57,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,919 INFO L186 Difference]: Start difference. First operand has 31 places, 37 transitions, 93 flow. Second operand 4 states and 111 transitions. [2021-10-15 19:34:57,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 143 flow [2021-10-15 19:34:57,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:34:57,923 INFO L242 Difference]: Finished difference. Result has 35 places, 39 transitions, 117 flow [2021-10-15 19:34:57,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=39} [2021-10-15 19:34:57,924 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2021-10-15 19:34:57,924 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 39 transitions, 117 flow [2021-10-15 19:34:57,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:57,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:57,925 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:57,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:34:57,925 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-15 19:34:57,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:57,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088451196] [2021-10-15 19:34:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:57,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:58,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:58,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088451196] [2021-10-15 19:34:58,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088451196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:58,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:58,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:34:58,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203162099] [2021-10-15 19:34:58,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:34:58,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:34:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:34:58,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2021-10-15 19:34:58,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 39 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:58,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2021-10-15 19:34:58,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:58,056 INFO L129 PetriNetUnfolder]: 14/71 cut-off events. [2021-10-15 19:34:58,056 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-15 19:34:58,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 71 events. 14/71 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 186 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 118. Up to 17 conditions per place. [2021-10-15 19:34:58,058 INFO L132 encePairwiseOnDemand]: 36/43 looper letters, 14 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2021-10-15 19:34:58,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 175 flow [2021-10-15 19:34:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:34:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:34:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2021-10-15 19:34:58,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2021-10-15 19:34:58,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:58,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,064 INFO L186 Difference]: Start difference. First operand has 35 places, 39 transitions, 117 flow. Second operand 4 states and 111 transitions. [2021-10-15 19:34:58,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 175 flow [2021-10-15 19:34:58,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 168 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-15 19:34:58,068 INFO L242 Difference]: Finished difference. Result has 39 places, 41 transitions, 154 flow [2021-10-15 19:34:58,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2021-10-15 19:34:58,069 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2021-10-15 19:34:58,069 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 154 flow [2021-10-15 19:34:58,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,069 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:58,069 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:58,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:34:58,070 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-15 19:34:58,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:58,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964165406] [2021-10-15 19:34:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:58,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:58,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:58,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964165406] [2021-10-15 19:34:58,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964165406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:58,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:58,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:34:58,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207202579] [2021-10-15 19:34:58,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:34:58,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:34:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:34:58,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2021-10-15 19:34:58,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:58,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2021-10-15 19:34:58,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:58,169 INFO L129 PetriNetUnfolder]: 15/83 cut-off events. [2021-10-15 19:34:58,169 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-10-15 19:34:58,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 83 events. 15/83 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 238 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 151. Up to 24 conditions per place. [2021-10-15 19:34:58,170 INFO L132 encePairwiseOnDemand]: 38/43 looper letters, 20 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2021-10-15 19:34:58,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 220 flow [2021-10-15 19:34:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:34:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:34:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2021-10-15 19:34:58,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2021-10-15 19:34:58,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:58,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2021-10-15 19:34:58,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,176 INFO L186 Difference]: Start difference. First operand has 39 places, 41 transitions, 154 flow. Second operand 4 states and 111 transitions. [2021-10-15 19:34:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 220 flow [2021-10-15 19:34:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 200 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-10-15 19:34:58,181 INFO L242 Difference]: Finished difference. Result has 43 places, 43 transitions, 169 flow [2021-10-15 19:34:58,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-10-15 19:34:58,181 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2021-10-15 19:34:58,181 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 169 flow [2021-10-15 19:34:58,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:58,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:58,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:58,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:34:58,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:58,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-15 19:34:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:58,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453468042] [2021-10-15 19:34:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:58,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:34:58,249 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:34:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:34:58,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:34:58,318 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:34:58,320 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:34:58,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:34:58,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:34:58 BoogieIcfgContainer [2021-10-15 19:34:58,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:34:58,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:34:58,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:34:58,357 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:34:58,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:57" (3/4) ... [2021-10-15 19:34:58,361 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:34:58,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:34:58,363 INFO L168 Benchmark]: Toolchain (without parser) took 2024.60 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.5 MB in the beginning and 77.3 MB in the end (delta: -25.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:34:58,364 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:34:58,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.93 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.3 MB in the beginning and 81.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:34:58,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:34:58,366 INFO L168 Benchmark]: Boogie Preprocessor took 53.30 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 79.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:34:58,366 INFO L168 Benchmark]: RCFGBuilder took 404.78 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 66.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:34:58,367 INFO L168 Benchmark]: TraceAbstraction took 1191.67 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 78.1 MB in the end (delta: -12.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:34:58,368 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 77.9 MB in the end (delta: 233.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:34:58,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.93 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.3 MB in the beginning and 81.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.30 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 79.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 404.78 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 66.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1191.67 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 78.1 MB in the end (delta: -12.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 77.9 MB in the end (delta: 233.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1103.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 379.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 8 SDslu, 47 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.5ms SsaConstructionTime, 178.7ms SatisfiabilityAnalysisTime, 223.7ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:34:58,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:35:00,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:35:00,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:35:00,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:35:00,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:35:00,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:35:00,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:35:00,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:35:00,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:35:00,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:35:00,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:35:00,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:35:00,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:35:00,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:35:00,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:35:00,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:35:00,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:35:00,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:35:00,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:35:00,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:35:00,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:35:00,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:35:00,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:35:00,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:35:00,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:35:00,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:35:00,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:35:00,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:35:00,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:35:00,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:35:00,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:35:00,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:35:00,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:35:00,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:35:00,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:35:00,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:35:00,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:35:00,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:35:00,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:35:00,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:35:00,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:35:00,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:35:00,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:35:00,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:35:00,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:35:00,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:35:00,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:35:00,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:35:00,883 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:35:00,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:35:00,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:35:00,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:35:00,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:35:00,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:35:00,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:35:00,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:35:00,886 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:35:00,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:35:00,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:35:00,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:35:00,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:35:00,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:35:00,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:35:00,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:35:00,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:35:00,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:35:00,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:35:00,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:35:00,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:35:00,890 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:35:00,890 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:35:00,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:35:00,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:35:00,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:35:00,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:35:00,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:35:00,892 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2021-10-15 19:35:01,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:35:01,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:35:01,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:35:01,309 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:35:01,310 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:35:01,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-15 19:35:01,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/60ff36c93/cacd3fa1e4f94115b294f43c37bcf10e/FLAGbd8d9b7be [2021-10-15 19:35:01,903 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:35:01,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-15 19:35:01,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/60ff36c93/cacd3fa1e4f94115b294f43c37bcf10e/FLAGbd8d9b7be [2021-10-15 19:35:02,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/data/60ff36c93/cacd3fa1e4f94115b294f43c37bcf10e [2021-10-15 19:35:02,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:35:02,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:35:02,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:35:02,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:35:02,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:35:02,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e1e41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02, skipping insertion in model container [2021-10-15 19:35:02,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:35:02,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:35:02,546 WARN L228 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-15 19:35:02,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:35:02,566 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:35:02,589 WARN L228 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_9eac5f72-b969-4bee-871d-d8b3d93451d1/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-15 19:35:02,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:35:02,608 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:35:02,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02 WrapperNode [2021-10-15 19:35:02,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:35:02,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:35:02,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:35:02,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:35:02,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:35:02,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:35:02,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:35:02,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:35:02,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:35:02,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:35:02,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:35:02,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:35:02,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (1/1) ... [2021-10-15 19:35:02,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:35:02,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:35:02,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:35:02,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:35:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 19:35:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:35:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:35:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:35:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:35:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:35:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:35:03,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:35:03,247 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-15 19:35:03,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:03 BoogieIcfgContainer [2021-10-15 19:35:03,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:35:03,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:35:03,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:35:03,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:35:03,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:35:02" (1/3) ... [2021-10-15 19:35:03,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d6248c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:35:03, skipping insertion in model container [2021-10-15 19:35:03,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:02" (2/3) ... [2021-10-15 19:35:03,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d6248c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:35:03, skipping insertion in model container [2021-10-15 19:35:03,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:03" (3/3) ... [2021-10-15 19:35:03,270 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-10-15 19:35:03,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:35:03,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:35:03,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:35:03,371 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:35:03,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:35:03,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 43 transitions, 86 flow [2021-10-15 19:35:03,423 INFO L129 PetriNetUnfolder]: 16/43 cut-off events. [2021-10-15 19:35:03,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:03,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 43 events. 16/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:35:03,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 43 transitions, 86 flow [2021-10-15 19:35:03,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 39 transitions, 78 flow [2021-10-15 19:35:03,444 INFO L129 PetriNetUnfolder]: 11/31 cut-off events. [2021-10-15 19:35:03,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:03,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:03,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:03,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-15 19:35:03,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:03,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819768554] [2021-10-15 19:35:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:03,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:03,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:03,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:03,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:35:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:03,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:35:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:03,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:03,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:03,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819768554] [2021-10-15 19:35:03,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819768554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:03,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:03,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:35:03,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090061286] [2021-10-15 19:35:03,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:35:03,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:35:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:35:03,794 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 43 [2021-10-15 19:35:03,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 39 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:03,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:03,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 43 [2021-10-15 19:35:03,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:03,813 INFO L129 PetriNetUnfolder]: 11/35 cut-off events. [2021-10-15 19:35:03,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:03,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 35 events. 11/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 4/28 useless extension candidates. Maximal degree in co-relation 35. Up to 5 conditions per place. [2021-10-15 19:35:03,816 INFO L132 encePairwiseOnDemand]: 39/43 looper letters, 0 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2021-10-15 19:35:03,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 70 flow [2021-10-15 19:35:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:35:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:35:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2021-10-15 19:35:03,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2021-10-15 19:35:03,829 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 80 transitions. [2021-10-15 19:35:03,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 80 transitions. [2021-10-15 19:35:03,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:03,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 80 transitions. [2021-10-15 19:35:03,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:03,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:03,844 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:03,846 INFO L186 Difference]: Start difference. First operand has 25 places, 39 transitions, 78 flow. Second operand 2 states and 80 transitions. [2021-10-15 19:35:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 70 flow [2021-10-15 19:35:03,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:03,854 INFO L242 Difference]: Finished difference. Result has 26 places, 35 transitions, 70 flow [2021-10-15 19:35:03,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=35} [2021-10-15 19:35:03,857 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-10-15 19:35:03,857 INFO L470 AbstractCegarLoop]: Abstraction has has 26 places, 35 transitions, 70 flow [2021-10-15 19:35:03,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:03,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:03,859 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:03,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:04,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:04,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-15 19:35:04,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:04,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509521960] [2021-10-15 19:35:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:04,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:04,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:04,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:35:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:04,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:35:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:04,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:04,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:04,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509521960] [2021-10-15 19:35:04,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509521960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:04,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 19:35:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248502042] [2021-10-15 19:35:04,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:35:04,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:35:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:35:04,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2021-10-15 19:35:04,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 35 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:04,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:04,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2021-10-15 19:35:04,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:04,539 INFO L129 PetriNetUnfolder]: 13/59 cut-off events. [2021-10-15 19:35:04,540 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:04,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 59 events. 13/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-10-15 19:35:04,541 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 9 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2021-10-15 19:35:04,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 124 flow [2021-10-15 19:35:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:35:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:35:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2021-10-15 19:35:04,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624031007751938 [2021-10-15 19:35:04,550 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 161 transitions. [2021-10-15 19:35:04,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 161 transitions. [2021-10-15 19:35:04,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:04,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 161 transitions. [2021-10-15 19:35:04,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:04,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:04,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:04,564 INFO L186 Difference]: Start difference. First operand has 26 places, 35 transitions, 70 flow. Second operand 6 states and 161 transitions. [2021-10-15 19:35:04,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 124 flow [2021-10-15 19:35:04,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:04,568 INFO L242 Difference]: Finished difference. Result has 33 places, 39 transitions, 114 flow [2021-10-15 19:35:04,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=39} [2021-10-15 19:35:04,571 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2021-10-15 19:35:04,572 INFO L470 AbstractCegarLoop]: Abstraction has has 33 places, 39 transitions, 114 flow [2021-10-15 19:35:04,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:04,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:04,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:04,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:04,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:04,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:04,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-15 19:35:04,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:04,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16660390] [2021-10-15 19:35:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:04,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:04,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:04,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:04,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:35:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:04,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:35:04,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:05,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:05,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:05,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16660390] [2021-10-15 19:35:05,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16660390] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:05,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:05,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-15 19:35:05,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000044788] [2021-10-15 19:35:05,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:35:05,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:35:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:35:05,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 43 [2021-10-15 19:35:05,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 39 transitions, 114 flow. Second operand has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:05,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:05,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 43 [2021-10-15 19:35:05,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:05,744 INFO L129 PetriNetUnfolder]: 9/58 cut-off events. [2021-10-15 19:35:05,744 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 19:35:05,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 58 events. 9/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 101. Up to 22 conditions per place. [2021-10-15 19:35:05,746 INFO L132 encePairwiseOnDemand]: 37/43 looper letters, 9 selfloop transitions, 1 changer transitions 3/40 dead transitions. [2021-10-15 19:35:05,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 142 flow [2021-10-15 19:35:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:35:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:35:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2021-10-15 19:35:05,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6782945736434108 [2021-10-15 19:35:05,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 175 transitions. [2021-10-15 19:35:05,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 175 transitions. [2021-10-15 19:35:05,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:05,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 175 transitions. [2021-10-15 19:35:05,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:05,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:05,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:05,754 INFO L186 Difference]: Start difference. First operand has 33 places, 39 transitions, 114 flow. Second operand 6 states and 175 transitions. [2021-10-15 19:35:05,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 142 flow [2021-10-15 19:35:05,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:05,758 INFO L242 Difference]: Finished difference. Result has 41 places, 37 transitions, 114 flow [2021-10-15 19:35:05,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2021-10-15 19:35:05,767 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2021-10-15 19:35:05,767 INFO L470 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 114 flow [2021-10-15 19:35:05,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:05,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:05,768 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:05,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:05,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:05,981 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:05,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-15 19:35:05,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:05,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620055588] [2021-10-15 19:35:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:05,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:05,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:06,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:35:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:06,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:35:06,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:06,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:06,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:06,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620055588] [2021-10-15 19:35:06,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620055588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:06,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:06,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 19:35:06,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504483551] [2021-10-15 19:35:06,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:35:06,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:35:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:35:06,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 43 [2021-10-15 19:35:06,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:06,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:06,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 43 [2021-10-15 19:35:06,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:06,386 INFO L129 PetriNetUnfolder]: 7/53 cut-off events. [2021-10-15 19:35:06,386 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-15 19:35:06,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 53 events. 7/53 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 103. Up to 11 conditions per place. [2021-10-15 19:35:06,387 INFO L132 encePairwiseOnDemand]: 31/43 looper letters, 10 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2021-10-15 19:35:06,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 170 flow [2021-10-15 19:35:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:35:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:35:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2021-10-15 19:35:06,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2021-10-15 19:35:06,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2021-10-15 19:35:06,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2021-10-15 19:35:06,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:06,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2021-10-15 19:35:06,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:06,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:06,395 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:06,395 INFO L186 Difference]: Start difference. First operand has 41 places, 37 transitions, 114 flow. Second operand 6 states and 158 transitions. [2021-10-15 19:35:06,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 170 flow [2021-10-15 19:35:06,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 159 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-10-15 19:35:06,399 INFO L242 Difference]: Finished difference. Result has 39 places, 41 transitions, 151 flow [2021-10-15 19:35:06,399 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2021-10-15 19:35:06,400 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2021-10-15 19:35:06,400 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 151 flow [2021-10-15 19:35:06,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:06,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:06,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:06,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:06,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:06,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-15 19:35:06,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:06,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456435935] [2021-10-15 19:35:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:06,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:06,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:06,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:06,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:35:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:06,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:35:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:07,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:07,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:07,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456435935] [2021-10-15 19:35:07,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456435935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:07,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:07,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-15 19:35:07,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786707333] [2021-10-15 19:35:07,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:35:07,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:35:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:35:07,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 43 [2021-10-15 19:35:07,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:07,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:07,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 43 [2021-10-15 19:35:07,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:07,702 INFO L129 PetriNetUnfolder]: 6/51 cut-off events. [2021-10-15 19:35:07,702 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-15 19:35:07,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 51 events. 6/51 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 3/54 useless extension candidates. Maximal degree in co-relation 106. Up to 8 conditions per place. [2021-10-15 19:35:07,703 INFO L132 encePairwiseOnDemand]: 37/43 looper letters, 7 selfloop transitions, 1 changer transitions 13/43 dead transitions. [2021-10-15 19:35:07,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 179 flow [2021-10-15 19:35:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:35:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:35:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2021-10-15 19:35:07,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6644518272425249 [2021-10-15 19:35:07,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 200 transitions. [2021-10-15 19:35:07,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 200 transitions. [2021-10-15 19:35:07,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:07,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 200 transitions. [2021-10-15 19:35:07,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:07,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:07,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:07,709 INFO L186 Difference]: Start difference. First operand has 39 places, 41 transitions, 151 flow. Second operand 7 states and 200 transitions. [2021-10-15 19:35:07,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 179 flow [2021-10-15 19:35:07,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:07,712 INFO L242 Difference]: Finished difference. Result has 48 places, 30 transitions, 107 flow [2021-10-15 19:35:07,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2021-10-15 19:35:07,713 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 23 predicate places. [2021-10-15 19:35:07,713 INFO L470 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 107 flow [2021-10-15 19:35:07,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:07,714 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:07,714 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:07,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:07,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:07,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-15 19:35:07,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:35:07,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704749575] [2021-10-15 19:35:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:07,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:35:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:35:07,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:35:07,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:35:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:08,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:35:08,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:08,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:35:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:08,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:35:08,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704749575] [2021-10-15 19:35:08,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704749575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:08,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:08,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-15 19:35:08,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42260822] [2021-10-15 19:35:08,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:35:08,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:35:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:35:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:35:08,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 43 [2021-10-15 19:35:08,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:08,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:08,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 43 [2021-10-15 19:35:08,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:10,421 INFO L129 PetriNetUnfolder]: 4/28 cut-off events. [2021-10-15 19:35:10,421 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-15 19:35:10,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 28 events. 4/28 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 55. Up to 5 conditions per place. [2021-10-15 19:35:10,422 INFO L132 encePairwiseOnDemand]: 38/43 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-10-15 19:35:10,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 109 flow [2021-10-15 19:35:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:35:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:35:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2021-10-15 19:35:10,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6705426356589147 [2021-10-15 19:35:10,423 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2021-10-15 19:35:10,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2021-10-15 19:35:10,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:10,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2021-10-15 19:35:10,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:10,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:10,426 INFO L186 Difference]: Start difference. First operand has 48 places, 30 transitions, 107 flow. Second operand 6 states and 173 transitions. [2021-10-15 19:35:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 109 flow [2021-10-15 19:35:10,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 86 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-10-15 19:35:10,427 INFO L242 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-10-15 19:35:10,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-10-15 19:35:10,428 INFO L334 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2021-10-15 19:35:10,428 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2021-10-15 19:35:10,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:35:10,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:35:10,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:35:10,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:35:10,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:35:10,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:35:10 BoogieIcfgContainer [2021-10-15 19:35:10,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:35:10,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:35:10,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:35:10,642 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:35:10,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:03" (3/4) ... [2021-10-15 19:35:10,645 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:35:10,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-15 19:35:10,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:35:10,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:35:10,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:35:10,724 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:35:10,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:35:10,725 INFO L168 Benchmark]: Toolchain (without parser) took 8453.89 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 39.4 MB in the beginning and 61.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,726 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:35:10,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.05 ms. Allocated memory is still 73.4 MB. Free memory was 39.2 MB in the beginning and 49.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.44 ms. Allocated memory is still 73.4 MB. Free memory was 49.3 MB in the beginning and 47.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,727 INFO L168 Benchmark]: Boogie Preprocessor took 45.65 ms. Allocated memory is still 73.4 MB. Free memory was 47.5 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,728 INFO L168 Benchmark]: RCFGBuilder took 549.39 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 33.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,728 INFO L168 Benchmark]: TraceAbstraction took 7390.23 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 32.7 MB in the beginning and 64.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,729 INFO L168 Benchmark]: Witness Printer took 82.60 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 61.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:10,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.05 ms. Allocated memory is still 73.4 MB. Free memory was 39.2 MB in the beginning and 49.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.44 ms. Allocated memory is still 73.4 MB. Free memory was 49.3 MB in the beginning and 47.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.65 ms. Allocated memory is still 73.4 MB. Free memory was 47.5 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.39 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 33.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7390.23 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 32.7 MB in the beginning and 64.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 82.60 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 61.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7281.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3233.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 62.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 41 SDslu, 49 SDs, 0 SdLazy, 128 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2298.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1170.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 94.8ms SsaConstructionTime, 384.7ms SatisfiabilityAnalysisTime, 1805.6ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:35:10,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eac5f72-b969-4bee-871d-d8b3d93451d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...