./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 ........................................................................................................................................................................................................................................................................................................................................ 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 ........................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:26:54,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:26:54,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:26:54,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:26:54,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:26:54,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:26:54,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:26:54,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:26:54,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:26:54,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:26:54,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:26:54,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:26:54,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:26:54,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:26:54,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:26:54,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:26:54,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:26:54,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:26:54,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:26:54,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:26:54,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:26:54,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:26:54,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:26:54,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:26:54,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:26:54,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:26:54,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:26:54,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:26:54,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:26:54,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:26:54,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:26:54,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:26:54,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:26:54,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:26:54,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:26:54,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:26:54,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:26:54,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:26:54,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:26:54,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:26:54,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:26:54,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:26:54,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:26:54,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:26:54,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:26:54,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:26:54,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:26:54,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:26:54,991 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:26:54,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:26:54,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:26:54,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:26:54,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:26:54,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:26:54,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:26:54,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:26:54,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:26:54,994 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:26:54,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:26:54,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:26:54,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:26:54,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:26:54,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:26:54,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:26:54,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:26:54,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:26:54,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:26:54,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:26:54,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:26:54,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:26:54,998 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:26:54,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:26:54,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:26:54,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:26:54,999 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2021-10-15 20:26:55,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:26:55,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:26:55,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:26:55,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:26:55,344 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:26:55,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2021-10-15 20:26:55,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/2728b5966/029b9423dca3428bac64a101c619fd73/FLAGcfd8523c0 [2021-10-15 20:26:55,988 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:26:55,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2021-10-15 20:26:55,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/2728b5966/029b9423dca3428bac64a101c619fd73/FLAGcfd8523c0 [2021-10-15 20:26:56,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/2728b5966/029b9423dca3428bac64a101c619fd73 [2021-10-15 20:26:56,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:26:56,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:26:56,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:26:56,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:26:56,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:26:56,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107a3ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56, skipping insertion in model container [2021-10-15 20:26:56,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:26:56,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:26:56,584 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c[2407,2420] [2021-10-15 20:26:56,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:26:56,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:26:56,681 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c[2407,2420] [2021-10-15 20:26:56,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:26:56,699 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:26:56,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56 WrapperNode [2021-10-15 20:26:56,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:26:56,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:26:56,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:26:56,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:26:56,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:26:56,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:26:56,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:26:56,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:26:56,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:26:56,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:26:56,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:26:56,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:26:56,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (1/1) ... [2021-10-15 20:26:56,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:26:56,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:26:56,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:26:56,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:26:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:26:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:26:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:26:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:26:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 20:26:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:26:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:26:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:26:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:26:57,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:26:57,332 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:26:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:57 BoogieIcfgContainer [2021-10-15 20:26:57,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:26:57,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:26:57,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:26:57,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:26:57,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:26:56" (1/3) ... [2021-10-15 20:26:57,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e21526a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:26:57, skipping insertion in model container [2021-10-15 20:26:57,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:56" (2/3) ... [2021-10-15 20:26:57,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e21526a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:26:57, skipping insertion in model container [2021-10-15 20:26:57,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:57" (3/3) ... [2021-10-15 20:26:57,356 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2021-10-15 20:26:57,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:26:57,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:26:57,442 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:26:57,449 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 20:26:57,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:26:57,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 58 transitions, 116 flow [2021-10-15 20:26:57,500 INFO L129 PetriNetUnfolder]: 22/58 cut-off events. [2021-10-15 20:26:57,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:26:57,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 58 events. 22/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-15 20:26:57,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 58 transitions, 116 flow [2021-10-15 20:26:57,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 54 transitions, 108 flow [2021-10-15 20:26:57,528 INFO L129 PetriNetUnfolder]: 21/53 cut-off events. [2021-10-15 20:26:57,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:26:57,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:26:57,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:57,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:26:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:57,536 INFO L82 PathProgramCache]: Analyzing trace with hash -640155448, now seen corresponding path program 1 times [2021-10-15 20:26:57,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:57,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313361931] [2021-10-15 20:26:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:57,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:26:57,704 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 20:26:57,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:26:57,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313361931] [2021-10-15 20:26:57,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313361931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:26:57,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:26:57,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:26:57,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270337301] [2021-10-15 20:26:57,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:26:57,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:26:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:26:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:26:57,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 58 [2021-10-15 20:26:57,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 54 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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 20:26:57,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:26:57,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 58 [2021-10-15 20:26:57,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:26:57,762 INFO L129 PetriNetUnfolder]: 15/48 cut-off events. [2021-10-15 20:26:57,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:26:57,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 48 events. 15/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 6/39 useless extension candidates. Maximal degree in co-relation 48. Up to 8 conditions per place. [2021-10-15 20:26:57,765 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 0 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2021-10-15 20:26:57,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 96 flow [2021-10-15 20:26:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:26:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:26:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2021-10-15 20:26:57,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9310344827586207 [2021-10-15 20:26:57,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions. [2021-10-15 20:26:57,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions. [2021-10-15 20:26:57,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:26:57,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions. [2021-10-15 20:26:57,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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 20:26:57,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 20:26:57,800 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 20:26:57,802 INFO L186 Difference]: Start difference. First operand has 34 places, 54 transitions, 108 flow. Second operand 2 states and 108 transitions. [2021-10-15 20:26:57,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 96 flow [2021-10-15 20:26:57,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:26:57,817 INFO L242 Difference]: Finished difference. Result has 35 places, 48 transitions, 96 flow [2021-10-15 20:26:57,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=48} [2021-10-15 20:26:57,820 INFO L334 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2021-10-15 20:26:57,822 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 48 transitions, 96 flow [2021-10-15 20:26:57,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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 20:26:57,823 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:26:57,823 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:57,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:26:57,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:26:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2021-10-15 20:26:57,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:57,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86671373] [2021-10-15 20:26:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:57,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:57,970 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:58,082 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:26:58,082 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:26:58,084 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:26:58,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:26:58,093 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:26:58,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:26:58 BoogieIcfgContainer [2021-10-15 20:26:58,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:26:58,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:26:58,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:26:58,129 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:26:58,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:57" (3/4) ... [2021-10-15 20:26:58,133 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:26:58,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:26:58,136 INFO L168 Benchmark]: Toolchain (without parser) took 1798.94 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.9 MB in the beginning and 56.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,137 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:26:58,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.43 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.6 MB in the beginning and 106.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 134.2 MB. Free memory was 106.4 MB in the beginning and 104.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,139 INFO L168 Benchmark]: Boogie Preprocessor took 48.07 ms. Allocated memory is still 134.2 MB. Free memory was 104.3 MB in the beginning and 103.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,140 INFO L168 Benchmark]: RCFGBuilder took 532.72 ms. Allocated memory is still 134.2 MB. Free memory was 102.7 MB in the beginning and 89.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,141 INFO L168 Benchmark]: TraceAbstraction took 790.33 ms. Allocated memory is still 134.2 MB. Free memory was 88.5 MB in the beginning and 56.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:26:58,142 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 134.2 MB. Free memory was 56.5 MB in the beginning and 56.0 MB in the end (delta: 506.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:26:58,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.43 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.6 MB in the beginning and 106.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 134.2 MB. Free memory was 106.4 MB in the beginning and 104.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.07 ms. Allocated memory is still 134.2 MB. Free memory was 104.3 MB in the beginning and 103.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 532.72 ms. Allocated memory is still 134.2 MB. Free memory was 102.7 MB in the beginning and 89.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 790.33 ms. Allocated memory is still 134.2 MB. Free memory was 88.5 MB in the beginning and 56.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.72 ms. Allocated memory is still 134.2 MB. Free memory was 56.5 MB in the beginning and 56.0 MB in the end (delta: 506.8 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: 108]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 91, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 90. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L103] double x = 1.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] double res = floor_double(x); [L83] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L107] COND TRUE !isinf_double(res) [L108] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 654.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 89.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 2, 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: 16.6ms SsaConstructionTime, 150.1ms SatisfiabilityAnalysisTime, 51.6ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 20:26:58,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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 20:27:00,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:27:00,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:27:01,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:27:01,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:27:01,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:27:01,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:27:01,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:27:01,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:27:01,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:27:01,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:27:01,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:27:01,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:27:01,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:27:01,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:27:01,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:27:01,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:27:01,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:27:01,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:27:01,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:27:01,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:27:01,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:27:01,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:27:01,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:27:01,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:27:01,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:27:01,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:27:01,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:27:01,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:27:01,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:27:01,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:27:01,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:27:01,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:27:01,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:27:01,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:27:01,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:27:01,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:27:01,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:27:01,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:27:01,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:27:01,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:27:01,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:27:01,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:27:01,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:27:01,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:27:01,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:27:01,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:27:01,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:27:01,202 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:27:01,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:27:01,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:27:01,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:27:01,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:27:01,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:27:01,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:27:01,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:27:01,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:27:01,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:27:01,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:27:01,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:27:01,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:27:01,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:27:01,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:27:01,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:27:01,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:27:01,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:27:01,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:27:01,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:27:01,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:27:01,210 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:27:01,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:27:01,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:27:01,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:27:01,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:27:01,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:27:01,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:27:01,212 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2021-10-15 20:27:01,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:27:01,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:27:01,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:27:01,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:27:01,751 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:27:01,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2021-10-15 20:27:01,838 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/c2039b966/52fa88ee4beb43e29afaf0e66740b3bf/FLAG44b8cf46a [2021-10-15 20:27:02,452 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:27:02,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2021-10-15 20:27:02,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/c2039b966/52fa88ee4beb43e29afaf0e66740b3bf/FLAG44b8cf46a [2021-10-15 20:27:02,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/data/c2039b966/52fa88ee4beb43e29afaf0e66740b3bf [2021-10-15 20:27:02,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:27:02,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:27:02,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:27:02,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:27:02,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:27:02,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:27:02" (1/1) ... [2021-10-15 20:27:02,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fce521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:02, skipping insertion in model container [2021-10-15 20:27:02,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:27:02" (1/1) ... [2021-10-15 20:27:02,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:27:02,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:27:03,096 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c[2407,2420] [2021-10-15 20:27:03,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:27:03,114 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:27:03,155 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_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c[2407,2420] [2021-10-15 20:27:03,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:27:03,179 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:27:03,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03 WrapperNode [2021-10-15 20:27:03,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:27:03,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:27:03,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:27:03,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:27:03,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:27:03,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:27:03,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:27:03,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:27:03,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:27:03,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:27:03,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:27:03,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:27:03,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (1/1) ... [2021-10-15 20:27:03,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:27:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:27:03,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:27:03,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:27:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 20:27:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 20:27:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:27:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:27:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 20:27:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:27:03,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:27:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 20:27:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:27:05,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:27:05,735 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:27:05,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:05 BoogieIcfgContainer [2021-10-15 20:27:05,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:27:05,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:27:05,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:27:05,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:27:05,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:27:02" (1/3) ... [2021-10-15 20:27:05,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7520e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:27:05, skipping insertion in model container [2021-10-15 20:27:05,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:03" (2/3) ... [2021-10-15 20:27:05,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7520e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:27:05, skipping insertion in model container [2021-10-15 20:27:05,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:05" (3/3) ... [2021-10-15 20:27:05,749 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2021-10-15 20:27:05,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:27:05,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:27:05,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:27:05,833 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 20:27:05,834 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:27:05,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 58 transitions, 116 flow [2021-10-15 20:27:05,881 INFO L129 PetriNetUnfolder]: 22/58 cut-off events. [2021-10-15 20:27:05,882 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:27:05,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 58 events. 22/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-15 20:27:05,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 58 transitions, 116 flow [2021-10-15 20:27:05,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 54 transitions, 108 flow [2021-10-15 20:27:05,901 INFO L129 PetriNetUnfolder]: 21/53 cut-off events. [2021-10-15 20:27:05,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:27:05,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:27:05,902 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:27:05,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:27:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:05,910 INFO L82 PathProgramCache]: Analyzing trace with hash -640155448, now seen corresponding path program 1 times [2021-10-15 20:27:05,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:27:05,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728968325] [2021-10-15 20:27:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:05,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:27:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:27:05,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:27:05,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:27:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:06,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 20:27:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:27:06,198 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 20:27:06,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:27:06,252 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 20:27:06,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:27:06,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728968325] [2021-10-15 20:27:06,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728968325] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:06,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:06,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 20:27:06,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658038503] [2021-10-15 20:27:06,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:27:06,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:27:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:27:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:27:06,289 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 58 [2021-10-15 20:27:06,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 54 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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 20:27:06,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:27:06,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 58 [2021-10-15 20:27:06,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:27:06,311 INFO L129 PetriNetUnfolder]: 15/48 cut-off events. [2021-10-15 20:27:06,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:27:06,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 48 events. 15/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 6/39 useless extension candidates. Maximal degree in co-relation 48. Up to 8 conditions per place. [2021-10-15 20:27:06,315 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 0 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2021-10-15 20:27:06,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 96 flow [2021-10-15 20:27:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:27:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:27:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2021-10-15 20:27:06,329 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9310344827586207 [2021-10-15 20:27:06,330 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions. [2021-10-15 20:27:06,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions. [2021-10-15 20:27:06,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:27:06,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions. [2021-10-15 20:27:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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 20:27:06,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 20:27:06,345 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 20:27:06,347 INFO L186 Difference]: Start difference. First operand has 34 places, 54 transitions, 108 flow. Second operand 2 states and 108 transitions. [2021-10-15 20:27:06,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 96 flow [2021-10-15 20:27:06,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:27:06,355 INFO L242 Difference]: Finished difference. Result has 35 places, 48 transitions, 96 flow [2021-10-15 20:27:06,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=48} [2021-10-15 20:27:06,359 INFO L334 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2021-10-15 20:27:06,359 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 48 transitions, 96 flow [2021-10-15 20:27:06,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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 20:27:06,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:27:06,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:27:06,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:27:06,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:27:06,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:27:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2021-10-15 20:27:06,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:27:06,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474943143] [2021-10-15 20:27:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:06,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:27:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:27:06,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:27:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:27:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:27:06,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:27:07,268 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 20:27:07,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:27:07,543 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 20:27:07,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:27:07,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474943143] [2021-10-15 20:27:07,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474943143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:07,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:07,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 20:27:07,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298784493] [2021-10-15 20:27:07,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:27:07,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:27:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:27:07,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:27:07,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2021-10-15 20:27:07,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 48 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 20:27:07,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:27:07,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2021-10-15 20:27:07,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:27:07,867 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-10-15 20:27:07,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:27:07,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 20:27:07,868 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 3 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2021-10-15 20:27:07,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 42 flow [2021-10-15 20:27:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:27:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:27:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2021-10-15 20:27:07,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2021-10-15 20:27:07,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 94 transitions. [2021-10-15 20:27:07,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 94 transitions. [2021-10-15 20:27:07,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:27:07,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 94 transitions. [2021-10-15 20:27:07,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 20:27:07,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 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 20:27:07,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 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 20:27:07,882 INFO L186 Difference]: Start difference. First operand has 35 places, 48 transitions, 96 flow. Second operand 5 states and 94 transitions. [2021-10-15 20:27:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 42 flow [2021-10-15 20:27:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:27:07,898 INFO L242 Difference]: Finished difference. Result has 21 places, 15 transitions, 36 flow [2021-10-15 20:27:07,899 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2021-10-15 20:27:07,900 INFO L334 CegarLoopForPetriNet]: 34 programPoint places, -13 predicate places. [2021-10-15 20:27:07,900 INFO L470 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 36 flow [2021-10-15 20:27:07,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 20:27:07,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:27:07,901 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:27:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:27:08,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:27:08,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:27:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:08,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2021-10-15 20:27:08,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:27:08,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561058473] [2021-10-15 20:27:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:08,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:27:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:27:08,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:27:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:27:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:08,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 20:27:08,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:27:08,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2021-10-15 20:27:08,914 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 20:27:08,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:27:09,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2021-10-15 20:27:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:27:14,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:27:14,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561058473] [2021-10-15 20:27:14,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561058473] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:14,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:14,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-15 20:27:14,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017875924] [2021-10-15 20:27:14,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 20:27:14,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:27:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 20:27:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:27:14,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-10-15 20:27:14,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 36 flow. Second operand has 15 states, 15 states have (on average 31.2) internal successors, (468), 15 states have internal predecessors, (468), 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 20:27:14,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:27:14,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-10-15 20:27:14,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:27:15,280 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-10-15 20:27:15,281 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:27:15,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 13 events. 0/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:27:15,281 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-10-15 20:27:15,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 13 transitions, 48 flow [2021-10-15 20:27:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:27:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:27:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2021-10-15 20:27:15,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2021-10-15 20:27:15,286 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 279 transitions. [2021-10-15 20:27:15,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 279 transitions. [2021-10-15 20:27:15,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:27:15,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 279 transitions. [2021-10-15 20:27:15,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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 20:27:15,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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 20:27:15,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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 20:27:15,293 INFO L186 Difference]: Start difference. First operand has 21 places, 15 transitions, 36 flow. Second operand 9 states and 279 transitions. [2021-10-15 20:27:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 13 transitions, 48 flow [2021-10-15 20:27:15,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 43 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:27:15,295 INFO L242 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-10-15 20:27:15,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-10-15 20:27:15,296 INFO L334 CegarLoopForPetriNet]: 34 programPoint places, -10 predicate places. [2021-10-15 20:27:15,296 INFO L470 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2021-10-15 20:27:15,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 31.2) internal successors, (468), 15 states have internal predecessors, (468), 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 20:27:15,300 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:27:15,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:27:15,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:27:15,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:27:15,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:27:15 BoogieIcfgContainer [2021-10-15 20:27:15,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:27:15,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:27:15,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:27:15,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:27:15,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:05" (3/4) ... [2021-10-15 20:27:15,538 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:27:15,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-15 20:27:15,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:27:15,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:27:15,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:27:15,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:27:15,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:27:15,651 INFO L168 Benchmark]: Toolchain (without parser) took 12866.37 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.7 MB in the beginning and 50.7 MB in the end (delta: -3.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,653 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:27:15,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.03 ms. Allocated memory is still 83.9 MB. Free memory was 47.5 MB in the beginning and 63.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.90 ms. Allocated memory is still 83.9 MB. Free memory was 63.1 MB in the beginning and 61.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,657 INFO L168 Benchmark]: Boogie Preprocessor took 46.18 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,657 INFO L168 Benchmark]: RCFGBuilder took 2455.67 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 45.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,658 INFO L168 Benchmark]: TraceAbstraction took 9786.30 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 44.8 MB in the beginning and 54.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,658 INFO L168 Benchmark]: Witness Printer took 123.33 ms. Allocated memory is still 100.7 MB. Free memory was 54.1 MB in the beginning and 50.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:15,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.03 ms. Allocated memory is still 83.9 MB. Free memory was 47.5 MB in the beginning and 63.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.90 ms. Allocated memory is still 83.9 MB. Free memory was 63.1 MB in the beginning and 61.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.18 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2455.67 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 45.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9786.30 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 44.8 MB in the beginning and 54.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 123.33 ms. Allocated memory is still 100.7 MB. Free memory was 54.1 MB in the beginning and 50.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 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: 108]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9701.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1297.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 57.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 38 SDslu, 7 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 550.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4841.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 16, 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: 64.6ms SsaConstructionTime, 316.7ms SatisfiabilityAnalysisTime, 7062.6ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 17 QuantifiedInterpolants, 1000 SizeOfPredicates, 21 NumberOfNonLiveVariables, 161 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 20:27:15,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcca9954-3bf4-4ca0-8c9f-c972ec6e0a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...