./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0970a.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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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 16ed93f7e94a59686881f163258e4b8f85fe8ac8 ......................................................................................................................................................................................................................................................................................................................................................................................................... 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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 16ed93f7e94a59686881f163258e4b8f85fe8ac8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:45:12,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:45:12,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:45:12,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:45:12,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:45:12,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:45:12,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:45:12,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:45:12,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:45:12,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:45:12,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:45:12,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:45:12,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:45:13,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:45:13,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:45:13,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:45:13,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:45:13,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:45:13,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:45:13,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:45:13,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:45:13,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:45:13,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:45:13,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:45:13,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:45:13,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:45:13,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:45:13,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:45:13,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:45:13,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:45:13,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:45:13,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:45:13,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:45:13,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:45:13,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:45:13,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:45:13,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:45:13,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:45:13,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:45:13,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:45:13,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:45:13,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:45:13,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:45:13,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:45:13,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:45:13,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:45:13,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:45:13,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:45:13,126 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:45:13,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:45:13,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:45:13,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:45:13,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:45:13,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:45:13,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:45:13,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:45:13,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:45:13,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:45:13,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:45:13,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:45:13,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:45:13,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:45:13,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:45:13,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:45:13,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:45:13,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:45:13,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:45:13,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:45:13,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:45:13,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:45:13,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:45:13,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:45:13,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:45:13,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:45:13,137 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16ed93f7e94a59686881f163258e4b8f85fe8ac8 [2021-10-15 19:45:13,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:45:13,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:45:13,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:45:13,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:45:13,534 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:45:13,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-10-15 19:45:13,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/5b51e73bc/ee4af37ec525410c8431b7b61e695ce3/FLAG297204cc3 [2021-10-15 19:45:14,150 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:45:14,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-10-15 19:45:14,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/5b51e73bc/ee4af37ec525410c8431b7b61e695ce3/FLAG297204cc3 [2021-10-15 19:45:14,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/5b51e73bc/ee4af37ec525410c8431b7b61e695ce3 [2021-10-15 19:45:14,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:45:14,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:45:14,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:45:14,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:45:14,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:45:14,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:14,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bd9dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14, skipping insertion in model container [2021-10-15 19:45:14,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:14,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:45:14,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:45:14,831 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c[4903,4916] [2021-10-15 19:45:14,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:45:14,846 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:45:14,907 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c[4903,4916] [2021-10-15 19:45:14,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:45:14,926 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:45:14,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14 WrapperNode [2021-10-15 19:45:14,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:45:14,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:45:14,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:45:14,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:45:14,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:14,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:45:15,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:45:15,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:45:15,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:45:15,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:45:15,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:45:15,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:45:15,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:45:15,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (1/1) ... [2021-10-15 19:45:15,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:45:15,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:45:15,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:45:15,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:45:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:45:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:45:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:45:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:45:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:45:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:45:15,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:45:15,849 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-15 19:45:15,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:15 BoogieIcfgContainer [2021-10-15 19:45:15,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:45:15,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:45:15,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:45:15,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:45:15,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:45:14" (1/3) ... [2021-10-15 19:45:15,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d155db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:45:15, skipping insertion in model container [2021-10-15 19:45:15,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:14" (2/3) ... [2021-10-15 19:45:15,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d155db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:45:15, skipping insertion in model container [2021-10-15 19:45:15,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:15" (3/3) ... [2021-10-15 19:45:15,872 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2021-10-15 19:45:15,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:45:15,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:45:15,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:45:15,954 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:45:15,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:45:15,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 80 transitions, 160 flow [2021-10-15 19:45:16,002 INFO L129 PetriNetUnfolder]: 32/80 cut-off events. [2021-10-15 19:45:16,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:16,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 80 events. 32/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:45:16,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 80 transitions, 160 flow [2021-10-15 19:45:16,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 74 transitions, 148 flow [2021-10-15 19:45:16,021 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-10-15 19:45:16,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:16,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:16,023 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:16,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2102814833, now seen corresponding path program 1 times [2021-10-15 19:45:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:45:16,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695300594] [2021-10-15 19:45:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:16,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:45:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:45:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:16,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:45:16,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695300594] [2021-10-15 19:45:16,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695300594] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:45:16,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:45:16,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:45:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532355210] [2021-10-15 19:45:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:45:16,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:45:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:45:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:45:16,300 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2021-10-15 19:45:16,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 74 transitions, 148 flow. Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:45:16,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2021-10-15 19:45:16,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:45:16,325 INFO L129 PetriNetUnfolder]: 16/60 cut-off events. [2021-10-15 19:45:16,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:16,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 60 events. 16/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 14/58 useless extension candidates. Maximal degree in co-relation 60. Up to 11 conditions per place. [2021-10-15 19:45:16,329 INFO L132 encePairwiseOnDemand]: 66/80 looper letters, 0 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2021-10-15 19:45:16,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:45:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:45:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2021-10-15 19:45:16,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-15 19:45:16,346 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 144 transitions. [2021-10-15 19:45:16,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 144 transitions. [2021-10-15 19:45:16,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:45:16,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 144 transitions. [2021-10-15 19:45:16,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,362 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,365 INFO L186 Difference]: Start difference. First operand has 45 places, 74 transitions, 148 flow. Second operand 2 states and 144 transitions. [2021-10-15 19:45:16,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:16,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:45:16,374 INFO L242 Difference]: Finished difference. Result has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:16,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=60} [2021-10-15 19:45:16,377 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2021-10-15 19:45:16,378 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:16,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:16,379 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:16,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:45:16,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash 299472482, now seen corresponding path program 1 times [2021-10-15 19:45:16,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:45:16,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483954998] [2021-10-15 19:45:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:16,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:45:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:45:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:16,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:45:16,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483954998] [2021-10-15 19:45:16,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483954998] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:45:16,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:45:16,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:45:16,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64637379] [2021-10-15 19:45:16,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:45:16,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:45:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:45:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:45:16,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 80 [2021-10-15 19:45:16,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 60 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:45:16,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 80 [2021-10-15 19:45:16,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:45:16,566 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2021-10-15 19:45:16,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:16,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 15/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 65. Up to 11 conditions per place. [2021-10-15 19:45:16,568 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 4 selfloop transitions, 0 changer transitions 1/60 dead transitions. [2021-10-15 19:45:16,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 130 flow [2021-10-15 19:45:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:45:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:45:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2021-10-15 19:45:16,577 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625 [2021-10-15 19:45:16,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2021-10-15 19:45:16,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2021-10-15 19:45:16,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:45:16,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2021-10-15 19:45:16,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,584 INFO L186 Difference]: Start difference. First operand has 46 places, 60 transitions, 120 flow. Second operand 3 states and 183 transitions. [2021-10-15 19:45:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 130 flow [2021-10-15 19:45:16,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:45:16,602 INFO L242 Difference]: Finished difference. Result has 49 places, 59 transitions, 120 flow [2021-10-15 19:45:16,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2021-10-15 19:45:16,603 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2021-10-15 19:45:16,604 INFO L470 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 120 flow [2021-10-15 19:45:16,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:16,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:16,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:16,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:45:16,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -675358345, now seen corresponding path program 1 times [2021-10-15 19:45:16,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:45:16,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422816408] [2021-10-15 19:45:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:16,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:45:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:45:16,779 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:45:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:45:16,941 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:45:16,941 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:45:16,942 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:45:16,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:45:16,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:45:17,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:45:17 BoogieIcfgContainer [2021-10-15 19:45:17,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:45:17,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:45:17,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:45:17,045 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:45:17,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:15" (3/4) ... [2021-10-15 19:45:17,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:45:17,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:45:17,057 INFO L168 Benchmark]: Toolchain (without parser) took 2559.47 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 49.3 MB in the beginning and 76.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,058 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:45:17,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.22 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 49.0 MB in the beginning and 87.6 MB in the end (delta: -38.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.85 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 85.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,072 INFO L168 Benchmark]: Boogie Preprocessor took 101.00 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 83.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,072 INFO L168 Benchmark]: RCFGBuilder took 726.13 ms. Allocated memory is still 115.3 MB. Free memory was 83.4 MB in the beginning and 66.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,073 INFO L168 Benchmark]: TraceAbstraction took 1181.86 ms. Allocated memory is still 115.3 MB. Free memory was 66.0 MB in the beginning and 76.8 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:45:17,074 INFO L168 Benchmark]: Witness Printer took 7.89 ms. Allocated memory is still 115.3 MB. Free memory was 76.8 MB in the beginning and 76.1 MB in the end (delta: 744.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:45:17,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.22 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 49.0 MB in the beginning and 87.6 MB in the end (delta: -38.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.85 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 85.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.00 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 83.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 726.13 ms. Allocated memory is still 115.3 MB. Free memory was 83.4 MB in the beginning and 66.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1181.86 ms. Allocated memory is still 115.3 MB. Free memory was 66.0 MB in the beginning and 76.8 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.89 ms. Allocated memory is still 115.3 MB. Free memory was 76.8 MB in the beginning and 76.1 MB in the end (delta: 744.1 kB). 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 - UnprovableResult [Line: 190]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 134, overapproximation of bitwiseAnd at line 172, overapproximation of someBinaryArithmeticDOUBLEoperation at line 135, overapproximation of someBinaryDOUBLEComparisonOperation at line 163. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L182] double x = __VERIFIER_nondet_double(); [L184] x < 0 && isfinite_double(x) [L166] __int32_t hx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L184] x < 0 && isfinite_double(x) VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L184] COND TRUE x < 0 && isfinite_double(x) [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L133] COND TRUE hx < 0x00100000 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L134] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L135] return -two54_log10 / zero_log10; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L186] double res = __ieee754_log10(x); [L163] return x != x; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L189] COND TRUE !isnan_double(res) [L190] reach_error() VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1011.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 189.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 45.1ms SsaConstructionTime, 204.2ms SatisfiabilityAnalysisTime, 147.1ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:45:17,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:45:20,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:45:20,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:45:20,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:45:20,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:45:20,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:45:20,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:45:20,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:45:20,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:45:20,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:45:20,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:45:20,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:45:20,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:45:20,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:45:20,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:45:20,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:45:20,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:45:20,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:45:20,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:45:20,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:45:20,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:45:20,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:45:20,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:45:20,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:45:20,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:45:20,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:45:20,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:45:20,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:45:20,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:45:20,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:45:20,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:45:20,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:45:20,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:45:20,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:45:20,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:45:20,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:45:20,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:45:20,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:45:20,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:45:20,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:45:20,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:45:20,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:45:20,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:45:20,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:45:20,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:45:20,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:45:20,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:45:20,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:45:20,333 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:45:20,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:45:20,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:45:20,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:45:20,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:45:20,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:45:20,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:45:20,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:45:20,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:45:20,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:45:20,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:45:20,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:45:20,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:45:20,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:45:20,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:45:20,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:45:20,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:45:20,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:45:20,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:45:20,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:45:20,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:45:20,340 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:45:20,341 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:45:20,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:45:20,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:45:20,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:45:20,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:45:20,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:45:20,343 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16ed93f7e94a59686881f163258e4b8f85fe8ac8 [2021-10-15 19:45:20,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:45:20,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:45:20,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:45:20,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:45:20,916 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:45:20,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-10-15 19:45:21,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/c7a647b6e/38b136a0dedd4ebc87e20014f7a2ad9a/FLAGd208c64ca [2021-10-15 19:45:21,753 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:45:21,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-10-15 19:45:21,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/c7a647b6e/38b136a0dedd4ebc87e20014f7a2ad9a/FLAGd208c64ca [2021-10-15 19:45:22,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/data/c7a647b6e/38b136a0dedd4ebc87e20014f7a2ad9a [2021-10-15 19:45:22,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:45:22,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:45:22,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:45:22,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:45:22,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:45:22,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f46ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22, skipping insertion in model container [2021-10-15 19:45:22,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:45:22,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:45:22,369 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c[4903,4916] [2021-10-15 19:45:22,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:45:22,401 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:45:22,548 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_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c[4903,4916] [2021-10-15 19:45:22,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:45:22,589 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:45:22,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22 WrapperNode [2021-10-15 19:45:22,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:45:22,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:45:22,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:45:22,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:45:22,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:45:22,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:45:22,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:45:22,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:45:22,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:45:22,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:45:22,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:45:22,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:45:22,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (1/1) ... [2021-10-15 19:45:22,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:45:22,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:45:22,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:45:22,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:45:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 19:45:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 19:45:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:45:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:45:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:45:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:45:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:45:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:45:52,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:45:52,717 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-15 19:45:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:52 BoogieIcfgContainer [2021-10-15 19:45:52,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:45:52,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:45:52,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:45:52,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:45:52,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:45:22" (1/3) ... [2021-10-15 19:45:52,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5ee94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:45:52, skipping insertion in model container [2021-10-15 19:45:52,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:45:22" (2/3) ... [2021-10-15 19:45:52,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5ee94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:45:52, skipping insertion in model container [2021-10-15 19:45:52,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:52" (3/3) ... [2021-10-15 19:45:52,730 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2021-10-15 19:45:52,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:45:52,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:45:52,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:45:52,812 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:45:52,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:45:52,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 80 transitions, 160 flow [2021-10-15 19:45:52,862 INFO L129 PetriNetUnfolder]: 32/80 cut-off events. [2021-10-15 19:45:52,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:52,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 80 events. 32/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:45:52,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 80 transitions, 160 flow [2021-10-15 19:45:52,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 74 transitions, 148 flow [2021-10-15 19:45:52,880 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-10-15 19:45:52,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:52,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:52,885 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:52,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2102814833, now seen corresponding path program 1 times [2021-10-15 19:45:52,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:45:52,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358501917] [2021-10-15 19:45:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:52,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:45:52,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:45:52,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:45:52,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:45:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:45:54,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:45:54,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:45:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:54,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:45:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:54,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:45:54,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358501917] [2021-10-15 19:45:54,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358501917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:45:54,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:45:54,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:45:54,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091360478] [2021-10-15 19:45:54,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:45:54,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:45:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:45:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:45:54,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2021-10-15 19:45:54,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 74 transitions, 148 flow. Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:54,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:45:54,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2021-10-15 19:45:54,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:45:54,534 INFO L129 PetriNetUnfolder]: 16/60 cut-off events. [2021-10-15 19:45:54,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:54,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 60 events. 16/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 14/58 useless extension candidates. Maximal degree in co-relation 60. Up to 11 conditions per place. [2021-10-15 19:45:54,539 INFO L132 encePairwiseOnDemand]: 66/80 looper letters, 0 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2021-10-15 19:45:54,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:45:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:45:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2021-10-15 19:45:54,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-15 19:45:54,556 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 144 transitions. [2021-10-15 19:45:54,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 144 transitions. [2021-10-15 19:45:54,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:45:54,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 144 transitions. [2021-10-15 19:45:54,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:54,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:54,581 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:54,583 INFO L186 Difference]: Start difference. First operand has 45 places, 74 transitions, 148 flow. Second operand 2 states and 144 transitions. [2021-10-15 19:45:54,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:54,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:45:54,590 INFO L242 Difference]: Finished difference. Result has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:54,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=60} [2021-10-15 19:45:54,596 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2021-10-15 19:45:54,596 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 60 transitions, 120 flow [2021-10-15 19:45:54,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:54,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:54,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:54,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:45:54,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:45:54,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 299472482, now seen corresponding path program 1 times [2021-10-15 19:45:54,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:45:54,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211638185] [2021-10-15 19:45:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:54,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:45:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:45:54,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:45:54,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:45:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:45:55,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:45:55,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:45:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:56,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:45:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:45:56,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:45:56,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211638185] [2021-10-15 19:45:56,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211638185] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:45:56,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:45:56,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:45:56,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991503639] [2021-10-15 19:45:56,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:45:56,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:45:56,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:45:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:45:56,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 80 [2021-10-15 19:45:56,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 60 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:56,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:45:56,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 80 [2021-10-15 19:45:56,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:45:56,577 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2021-10-15 19:45:56,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:45:56,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 15/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 65. Up to 11 conditions per place. [2021-10-15 19:45:56,579 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 4 selfloop transitions, 0 changer transitions 1/60 dead transitions. [2021-10-15 19:45:56,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 130 flow [2021-10-15 19:45:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:45:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:45:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2021-10-15 19:45:56,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625 [2021-10-15 19:45:56,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2021-10-15 19:45:56,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2021-10-15 19:45:56,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:45:56,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2021-10-15 19:45:56,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:56,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:56,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:56,590 INFO L186 Difference]: Start difference. First operand has 46 places, 60 transitions, 120 flow. Second operand 3 states and 183 transitions. [2021-10-15 19:45:56,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 130 flow [2021-10-15 19:45:56,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:45:56,595 INFO L242 Difference]: Finished difference. Result has 49 places, 59 transitions, 120 flow [2021-10-15 19:45:56,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2021-10-15 19:45:56,596 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2021-10-15 19:45:56,596 INFO L470 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 120 flow [2021-10-15 19:45:56,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:45:56,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:45:56,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:45:56,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:45:56,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:45:56,810 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:45:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:45:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -675358345, now seen corresponding path program 1 times [2021-10-15 19:45:56,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:45:56,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224745779] [2021-10-15 19:45:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:45:56,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:45:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:45:56,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:45:56,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:45:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:45:58,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:45:58,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:45:59,420 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 31 treesize of output 29 [2021-10-15 19:46:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:00,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:46:00,953 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 32 treesize of output 30 [2021-10-15 19:46:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:02,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:46:02,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224745779] [2021-10-15 19:46:02,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224745779] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:02,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:02,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-15 19:46:02,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157710948] [2021-10-15 19:46:02,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:46:02,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:46:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:46:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:46:02,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2021-10-15 19:46:02,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 120 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:02,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:02,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2021-10-15 19:46:02,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:07,024 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-10-15 19:46:07,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:07,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 18 events. 0/18 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. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:46:07,025 INFO L132 encePairwiseOnDemand]: 71/80 looper letters, 2 selfloop transitions, 6 changer transitions 0/18 dead transitions. [2021-10-15 19:46:07,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 54 flow [2021-10-15 19:46:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:46:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:46:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2021-10-15 19:46:07,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2021-10-15 19:46:07,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 340 transitions. [2021-10-15 19:46:07,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 340 transitions. [2021-10-15 19:46:07,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:07,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 340 transitions. [2021-10-15 19:46:07,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.57142857142857) internal successors, (340), 7 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:07,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:07,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:07,256 INFO L186 Difference]: Start difference. First operand has 49 places, 59 transitions, 120 flow. Second operand 7 states and 340 transitions. [2021-10-15 19:46:07,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 54 flow [2021-10-15 19:46:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 52 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:46:07,258 INFO L242 Difference]: Finished difference. Result has 27 places, 18 transitions, 48 flow [2021-10-15 19:46:07,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2021-10-15 19:46:07,258 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, -18 predicate places. [2021-10-15 19:46:07,259 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 48 flow [2021-10-15 19:46:07,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:07,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:07,260 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:07,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:07,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:46:07,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash 473095487, now seen corresponding path program 1 times [2021-10-15 19:46:07,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:46:07,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935186016] [2021-10-15 19:46:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:07,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:46:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:46:07,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:46:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:46:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:08,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:46:08,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:10,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:46:18,355 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start___ieee754_log10_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_log10_~x ULTIMATE.start___ieee754_log10_~x) c_~zero_log10~0))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-15 19:47:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:47:07,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:47:07,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935186016] [2021-10-15 19:47:07,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935186016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:07,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:07,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-15 19:47:07,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763517955] [2021-10-15 19:47:07,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:47:07,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:47:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:47:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2021-10-15 19:47:07,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 80 [2021-10-15 19:47:07,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 48 flow. Second operand has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:07,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:47:07,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 80 [2021-10-15 19:47:07,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:47:09,542 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start___ieee754_log10_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_log10_~x ULTIMATE.start___ieee754_log10_~x) c_~zero_log10~0))) (fp.eq .cse0 .cse0)))) (= (_ +zero 11 53) c_~zero_log10~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:47:10,864 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-10-15 19:47:10,865 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:47:10,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 16 events. 0/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:47:10,865 INFO L132 encePairwiseOnDemand]: 75/80 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2021-10-15 19:47:10,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 16 transitions, 56 flow [2021-10-15 19:47:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:47:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:47:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2021-10-15 19:47:10,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336 [2021-10-15 19:47:10,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 229 transitions. [2021-10-15 19:47:10,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 229 transitions. [2021-10-15 19:47:10,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:47:10,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 229 transitions. [2021-10-15 19:47:10,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:10,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:10,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:10,875 INFO L186 Difference]: Start difference. First operand has 27 places, 18 transitions, 48 flow. Second operand 6 states and 229 transitions. [2021-10-15 19:47:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 16 transitions, 56 flow [2021-10-15 19:47:10,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-15 19:47:10,876 INFO L242 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-10-15 19:47:10,877 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-10-15 19:47:10,877 INFO L334 CegarLoopForPetriNet]: 45 programPoint places, -21 predicate places. [2021-10-15 19:47:10,877 INFO L470 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2021-10-15 19:47:10,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:10,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:47:10,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:11,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:47:11,102 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:47:11,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:47:11 BoogieIcfgContainer [2021-10-15 19:47:11,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:47:11,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:47:11,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:47:11,111 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:47:11,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:45:52" (3/4) ... [2021-10-15 19:47:11,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:47:11,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-10-15 19:47:11,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:47:11,151 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:47:11,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:47:11,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:47:11,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:47:11,275 INFO L168 Benchmark]: Toolchain (without parser) took 109203.94 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.2 MB in the beginning and 37.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,275 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:47:11,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.28 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.0 MB in the beginning and 53.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.96 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 51.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,277 INFO L168 Benchmark]: Boogie Preprocessor took 102.84 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 49.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,277 INFO L168 Benchmark]: RCFGBuilder took 29918.93 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,278 INFO L168 Benchmark]: TraceAbstraction took 78387.73 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 43.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,278 INFO L168 Benchmark]: Witness Printer took 162.51 ms. Allocated memory is still 73.4 MB. Free memory was 43.9 MB in the beginning and 37.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:11,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.28 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.0 MB in the beginning and 53.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.96 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 51.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.84 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 49.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 29918.93 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 78387.73 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 43.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 162.51 ms. Allocated memory is still 73.4 MB. Free memory was 43.9 MB in the beginning and 37.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 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: 190]: 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, 49 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 78302.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 8281.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 59.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 9 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3323.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 10663.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.8ms SsaConstructionTime, 4364.6ms SatisfiabilityAnalysisTime, 64280.1ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 112 ConstructedInterpolants, 32 QuantifiedInterpolants, 728 SizeOfPredicates, 19 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:47:11,506 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-15 19:47:11,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc9ae6-ef51-446d-8b01-de84c4e4546a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...