./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.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_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/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_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/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_635b0650-2e11-4d47-9da6-9537a65b60d4/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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d ................................................................................................................................................................................................................................................................................................................................................ 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_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/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_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/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_635b0650-2e11-4d47-9da6-9537a65b60d4/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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:51:43,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:51:43,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:51:43,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:51:43,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:51:43,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:51:43,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:51:43,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:51:43,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:51:43,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:51:43,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:51:43,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:51:43,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:51:43,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:51:43,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:51:43,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:51:43,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:51:43,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:51:43,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:51:43,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:51:43,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:51:43,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:51:43,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:51:43,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:51:43,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:51:43,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:51:43,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:51:43,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:51:43,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:51:43,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:51:43,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:51:43,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:51:43,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:51:43,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:51:43,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:51:43,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:51:43,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:51:43,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:51:43,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:51:43,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:51:43,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:51:43,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:51:43,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:51:43,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:51:43,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:51:43,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:51:43,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:51:43,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:51:43,274 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:51:43,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:51:43,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:51:43,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:51:43,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:51:43,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:51:43,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:51:43,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:51:43,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:51:43,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:51:43,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:51:43,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:51:43,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:51:43,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:51:43,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:51:43,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:51:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:43,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:51:43,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:51:43,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:51:43,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:51:43,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:51:43,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:51:43,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:51:43,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:51:43,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:51:43,280 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_635b0650-2e11-4d47-9da6-9537a65b60d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2021-10-15 19:51:43,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:51:43,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:51:43,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:51:43,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:51:43,534 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:51:43,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2021-10-15 19:51:43,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/309fa8342/993e4f875d0d4a8b9b0c60c009ad3c40/FLAGa1b161a4b [2021-10-15 19:51:44,037 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:51:44,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2021-10-15 19:51:44,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/309fa8342/993e4f875d0d4a8b9b0c60c009ad3c40/FLAGa1b161a4b [2021-10-15 19:51:44,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/309fa8342/993e4f875d0d4a8b9b0c60c009ad3c40 [2021-10-15 19:51:44,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:51:44,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:51:44,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:44,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:51:44,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:51:44,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4f7cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44, skipping insertion in model container [2021-10-15 19:51:44,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:51:44,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:51:44,674 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_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2021-10-15 19:51:44,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:44,685 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:51:44,721 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_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2021-10-15 19:51:44,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:44,736 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:51:44,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44 WrapperNode [2021-10-15 19:51:44,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:44,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:44,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:51:44,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:51:44,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:44,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:51:44,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:51:44,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:51:44,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:51:44,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:51:44,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:51:44,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:51:44,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:51:44,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:51:44,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:51:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:51:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:51:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:51:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:51:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:51:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:51:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:51:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:51:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:51:45,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:51:45,296 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-15 19:51:45,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45 BoogieIcfgContainer [2021-10-15 19:51:45,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:51:45,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:51:45,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:51:45,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:51:45,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:51:44" (1/3) ... [2021-10-15 19:51:45,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b2585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:45, skipping insertion in model container [2021-10-15 19:51:45,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (2/3) ... [2021-10-15 19:51:45,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3b2585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:45, skipping insertion in model container [2021-10-15 19:51:45,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45" (3/3) ... [2021-10-15 19:51:45,321 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2021-10-15 19:51:45,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:51:45,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:51:45,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:51:45,382 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 19:51:45,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:51:45,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 51 transitions, 102 flow [2021-10-15 19:51:45,424 INFO L129 PetriNetUnfolder]: 20/51 cut-off events. [2021-10-15 19:51:45,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:45,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 51 events. 20/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:51:45,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 51 transitions, 102 flow [2021-10-15 19:51:45,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 47 transitions, 94 flow [2021-10-15 19:51:45,440 INFO L129 PetriNetUnfolder]: 19/46 cut-off events. [2021-10-15 19:51:45,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:45,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:45,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:45,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2021-10-15 19:51:45,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:45,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590058325] [2021-10-15 19:51:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:45,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:51:45,613 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 19:51:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:51:45,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590058325] [2021-10-15 19:51:45,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590058325] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:51:45,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:51:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:51:45,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608862639] [2021-10-15 19:51:45,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:51:45,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:51:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:51:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:51:45,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 51 [2021-10-15 19:51:45,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 47 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 19:51:45,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:51:45,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 51 [2021-10-15 19:51:45,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:51:45,654 INFO L129 PetriNetUnfolder]: 11/39 cut-off events. [2021-10-15 19:51:45,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:45,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 39 events. 11/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 8/36 useless extension candidates. Maximal degree in co-relation 39. Up to 11 conditions per place. [2021-10-15 19:51:45,657 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 0 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2021-10-15 19:51:45,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 78 flow [2021-10-15 19:51:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:51:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:51:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2021-10-15 19:51:45,668 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2021-10-15 19:51:45,669 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 92 transitions. [2021-10-15 19:51:45,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 92 transitions. [2021-10-15 19:51:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:51:45,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 92 transitions. [2021-10-15 19:51:45,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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 19:51:45,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:51:45,680 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:51:45,681 INFO L186 Difference]: Start difference. First operand has 29 places, 47 transitions, 94 flow. Second operand 2 states and 92 transitions. [2021-10-15 19:51:45,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 78 flow [2021-10-15 19:51:45,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:51:45,687 INFO L242 Difference]: Finished difference. Result has 30 places, 39 transitions, 78 flow [2021-10-15 19:51:45,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=39} [2021-10-15 19:51:45,690 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-10-15 19:51:45,690 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 39 transitions, 78 flow [2021-10-15 19:51:45,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 19:51:45,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:45,691 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:45,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:51:45,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:45,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:45,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2021-10-15 19:51:45,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:45,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429008640] [2021-10-15 19:51:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:45,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,880 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:51:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,982 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:51:45,983 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:51:45,985 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:51:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:51:45,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:51:46,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:51:46 BoogieIcfgContainer [2021-10-15 19:51:46,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:51:46,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:51:46,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:51:46,046 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:51:46,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45" (3/4) ... [2021-10-15 19:51:46,050 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:51:46,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:51:46,052 INFO L168 Benchmark]: Toolchain (without parser) took 1608.58 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 98.3 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:46,053 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:46,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 83.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:46,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:46,055 INFO L168 Benchmark]: Boogie Preprocessor took 31.65 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 80.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:46,056 INFO L168 Benchmark]: RCFGBuilder took 482.87 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 65.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:46,056 INFO L168 Benchmark]: TraceAbstraction took 745.29 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 65.4 MB in the beginning and 98.3 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:46,057 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 134.2 MB. Free memory is still 98.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:46,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 83.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.65 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 80.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 482.87 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 65.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 745.29 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 65.4 MB in the beginning and 98.3 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 134.2 MB. Free memory is still 98.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 139]: 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 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] 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; [L45] static const double zero = 0.0; VAL [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, two54_log=18014398509481984, zero=0] [L134] double x = 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [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, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [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, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [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, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [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, two54_log=18014398509481984, zero=0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [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, two54_log=18014398509481984, zero=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [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, two54_log=18014398509481984, zero=0] [L138] COND TRUE !isinf_double(res) [L139] reach_error() VAL [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, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 621.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 55.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 44.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 186.7ms SatisfiabilityAnalysisTime, 53.8ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:51:46,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/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 19:51:48,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:51:48,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:51:48,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:51:48,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:51:48,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:51:48,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:51:48,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:51:48,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:51:48,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:51:48,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:51:48,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:51:48,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:51:48,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:51:48,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:51:48,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:51:48,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:51:48,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:51:48,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:51:48,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:51:48,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:51:48,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:51:48,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:51:48,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:51:48,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:51:48,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:51:48,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:51:48,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:51:48,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:51:48,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:51:48,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:51:48,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:51:48,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:51:48,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:51:48,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:51:48,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:51:48,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:51:48,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:51:48,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:51:48,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:51:48,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:51:48,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:51:48,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:51:48,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:51:48,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:51:48,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:51:48,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:51:48,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:51:48,711 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:51:48,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:51:48,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:51:48,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:51:48,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:51:48,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:51:48,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:51:48,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:51:48,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:51:48,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:51:48,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:51:48,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:51:48,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:51:48,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:51:48,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:51:48,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:51:48,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:51:48,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:48,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:51:48,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:51:48,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:51:48,718 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:51:48,718 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:51:48,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:51:48,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:51:48,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:51:48,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:51:48,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:51:48,719 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_635b0650-2e11-4d47-9da6-9537a65b60d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2021-10-15 19:51:49,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:51:49,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:51:49,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:51:49,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:51:49,110 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:51:49,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2021-10-15 19:51:49,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/a9924eec0/6630ad845fd44be481badf091c25feb7/FLAGba61c519c [2021-10-15 19:51:49,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:51:49,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2021-10-15 19:51:49,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/a9924eec0/6630ad845fd44be481badf091c25feb7/FLAGba61c519c [2021-10-15 19:51:50,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/data/a9924eec0/6630ad845fd44be481badf091c25feb7 [2021-10-15 19:51:50,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:51:50,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:51:50,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:50,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:51:50,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:51:50,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b17a6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50, skipping insertion in model container [2021-10-15 19:51:50,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:51:50,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:51:50,323 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_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2021-10-15 19:51:50,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:50,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:51:50,386 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_635b0650-2e11-4d47-9da6-9537a65b60d4/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2021-10-15 19:51:50,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:50,441 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:51:50,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50 WrapperNode [2021-10-15 19:51:50,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:50,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:50,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:51:50,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:51:50,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:50,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:51:50,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:51:50,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:51:50,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:51:50,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:51:50,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:51:50,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:51:50,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (1/1) ... [2021-10-15 19:51:50,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:50,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:51:50,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:51:50,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:51:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 19:51:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 19:51:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:51:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:51:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:51:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:51:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:51:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:51:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:52:12,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:52:12,037 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-15 19:52:12,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:12 BoogieIcfgContainer [2021-10-15 19:52:12,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:52:12,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:52:12,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:52:12,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:52:12,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:51:50" (1/3) ... [2021-10-15 19:52:12,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5109cca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:12, skipping insertion in model container [2021-10-15 19:52:12,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:50" (2/3) ... [2021-10-15 19:52:12,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5109cca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:12, skipping insertion in model container [2021-10-15 19:52:12,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:12" (3/3) ... [2021-10-15 19:52:12,046 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2021-10-15 19:52:12,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:52:12,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:52:12,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:52:12,126 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 19:52:12,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:52:12,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 51 transitions, 102 flow [2021-10-15 19:52:12,186 INFO L129 PetriNetUnfolder]: 20/51 cut-off events. [2021-10-15 19:52:12,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:12,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 51 events. 20/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-10-15 19:52:12,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 51 transitions, 102 flow [2021-10-15 19:52:12,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 47 transitions, 94 flow [2021-10-15 19:52:12,211 INFO L129 PetriNetUnfolder]: 19/46 cut-off events. [2021-10-15 19:52:12,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:12,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:12,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:52:12,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:52:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2021-10-15 19:52:12,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:52:12,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715508395] [2021-10-15 19:52:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:12,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:52:12,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:52:12,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:52:12,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:52:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:13,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:52:13,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:52:13,377 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 19:52:13,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:52:13,552 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 19:52:13,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:52:13,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715508395] [2021-10-15 19:52:13,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715508395] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:13,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:13,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:52:13,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957391387] [2021-10-15 19:52:13,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:52:13,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:52:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:52:13,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:52:13,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 51 [2021-10-15 19:52:13,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 47 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 19:52:13,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:13,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 51 [2021-10-15 19:52:13,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:13,600 INFO L129 PetriNetUnfolder]: 11/39 cut-off events. [2021-10-15 19:52:13,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:13,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 39 events. 11/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 8/36 useless extension candidates. Maximal degree in co-relation 39. Up to 11 conditions per place. [2021-10-15 19:52:13,603 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 0 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2021-10-15 19:52:13,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 78 flow [2021-10-15 19:52:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:52:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:52:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2021-10-15 19:52:13,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2021-10-15 19:52:13,614 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 92 transitions. [2021-10-15 19:52:13,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 92 transitions. [2021-10-15 19:52:13,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:13,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 92 transitions. [2021-10-15 19:52:13,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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 19:52:13,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:52:13,625 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:52:13,627 INFO L186 Difference]: Start difference. First operand has 29 places, 47 transitions, 94 flow. Second operand 2 states and 92 transitions. [2021-10-15 19:52:13,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 78 flow [2021-10-15 19:52:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:52:13,640 INFO L242 Difference]: Finished difference. Result has 30 places, 39 transitions, 78 flow [2021-10-15 19:52:13,642 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=39} [2021-10-15 19:52:13,643 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-10-15 19:52:13,643 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 39 transitions, 78 flow [2021-10-15 19:52:13,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 19:52:13,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:13,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:52:13,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:52:13,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:52:13,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:52:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2021-10-15 19:52:13,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:52:13,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492177215] [2021-10-15 19:52:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:13,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:52:13,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:52:13,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:52:13,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:52:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-15 19:52:14,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:52:16,077 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 35 treesize of output 33 [2021-10-15 19:52:17,132 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 19:52:17,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:52:18,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2021-10-15 19:52:30,515 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode (fp.neg c_~two54_log~0) c_~zero~0) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|)))) (not (= (bvadd (bvneg (bvlshr (let ((.cse0 (bvadd (_ bv2146435072 32) (bvneg (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|)) (bvlshr (let ((.cse1 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_9|))) (bvor .cse1 (bvneg .cse1))) (_ bv31 32))))))) (bvor .cse0 (bvneg .cse0))) (_ bv31 32))) (_ bv1 32)) (_ bv0 32))))) is different from false [2021-10-15 19:52:32,692 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode (fp.neg c_~two54_log~0) c_~zero~0) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|)))) (not (= (bvadd (bvneg (bvlshr (let ((.cse0 (bvadd (_ bv2146435072 32) (bvneg (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|)) (bvlshr (let ((.cse1 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_9|))) (bvor .cse1 (bvneg .cse1))) (_ bv31 32))))))) (bvor .cse0 (bvneg .cse0))) (_ bv31 32))) (_ bv1 32)) (_ bv0 32))))) is different from true [2021-10-15 19:53:11,856 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 19:53:11,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:53:11,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492177215] [2021-10-15 19:53:11,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492177215] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:53:11,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:53:11,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-15 19:53:11,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156202942] [2021-10-15 19:53:11,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-15 19:53:11,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:53:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-15 19:53:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=128, Unknown=2, NotChecked=22, Total=182 [2021-10-15 19:53:11,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2021-10-15 19:53:11,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 78 flow. Second operand has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 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 19:53:11,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:53:11,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2021-10-15 19:53:11,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:53:14,240 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode 18014398509481984.0) c_~two54_log~0) (forall ((|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode (fp.neg c_~two54_log~0) c_~zero~0) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|)))) (not (= (bvadd (bvneg (bvlshr (let ((.cse0 (bvadd (_ bv2146435072 32) (bvneg (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|)) (bvlshr (let ((.cse1 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_9|))) (bvor .cse1 (bvneg .cse1))) (_ bv31 32))))))) (bvor .cse0 (bvneg .cse0))) (_ bv31 32))) (_ bv1 32)) (_ bv0 32))))) (= (_ +zero 11 53) c_~zero~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:54:02,603 INFO L129 PetriNetUnfolder]: 11/49 cut-off events. [2021-10-15 19:54:02,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:02,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 49 events. 11/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 107 event pairs, 0 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 79. Up to 24 conditions per place. [2021-10-15 19:54:02,604 INFO L132 encePairwiseOnDemand]: 40/51 looper letters, 20 selfloop transitions, 5 changer transitions 5/45 dead transitions. [2021-10-15 19:54:02,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 150 flow [2021-10-15 19:54:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:54:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:54:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2021-10-15 19:54:02,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2021-10-15 19:54:02,618 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 167 transitions. [2021-10-15 19:54:02,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 167 transitions. [2021-10-15 19:54:02,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:02,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 167 transitions. [2021-10-15 19:54:02,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 19:54:02,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 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 19:54:02,625 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 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 19:54:02,625 INFO L186 Difference]: Start difference. First operand has 30 places, 39 transitions, 78 flow. Second operand 8 states and 167 transitions. [2021-10-15 19:54:02,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 150 flow [2021-10-15 19:54:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:02,628 INFO L242 Difference]: Finished difference. Result has 43 places, 40 transitions, 109 flow [2021-10-15 19:54:02,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2021-10-15 19:54:02,629 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2021-10-15 19:54:02,630 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 109 flow [2021-10-15 19:54:02,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 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 19:54:02,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:02,631 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:02,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:54:02,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:54:02,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:54:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:02,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2016616349, now seen corresponding path program 1 times [2021-10-15 19:54:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:54:02,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831927263] [2021-10-15 19:54:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:02,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:54:02,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:54:02,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:54:02,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:54:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:03,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:54:03,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:54:03,825 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 19:54:03,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:54:04,588 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 19:54:04,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:54:04,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831927263] [2021-10-15 19:54:04,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831927263] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:04,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:04,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 19:54:04,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337837205] [2021-10-15 19:54:04,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:54:04,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:54:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:54:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:54:04,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2021-10-15 19:54:04,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 19:54:04,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:04,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2021-10-15 19:54:04,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:10,131 INFO L129 PetriNetUnfolder]: 7/43 cut-off events. [2021-10-15 19:54:10,131 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:54:10,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 43 events. 7/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 70. Up to 9 conditions per place. [2021-10-15 19:54:10,132 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 6 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2021-10-15 19:54:10,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 116 flow [2021-10-15 19:54:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:54:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:54:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2021-10-15 19:54:10,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5751633986928104 [2021-10-15 19:54:10,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 176 transitions. [2021-10-15 19:54:10,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 176 transitions. [2021-10-15 19:54:10,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:10,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 176 transitions. [2021-10-15 19:54:10,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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 19:54:10,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 19:54:10,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 19:54:10,635 INFO L186 Difference]: Start difference. First operand has 43 places, 40 transitions, 109 flow. Second operand 6 states and 176 transitions. [2021-10-15 19:54:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 116 flow [2021-10-15 19:54:10,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 96 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-10-15 19:54:10,638 INFO L242 Difference]: Finished difference. Result has 35 places, 36 transitions, 84 flow [2021-10-15 19:54:10,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2021-10-15 19:54:10,639 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2021-10-15 19:54:10,639 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 84 flow [2021-10-15 19:54:10,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 19:54:10,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:10,646 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 19:54:10,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:54:10,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:54:10,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:54:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash 933813038, now seen corresponding path program 1 times [2021-10-15 19:54:10,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:54:10,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309415485] [2021-10-15 19:54:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:10,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:54:10,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:54:10,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:54:10,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:54:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:54:11,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:54:13,202 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 19:54:13,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:54:22,276 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_11| (_ BitVec 64))) (or (not (bvsge ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_11|) (_ bv2146435072 32))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_11|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_11|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_11|)) (fp.mul c_currentRoundingMode c_ULTIMATE.start___ieee754_log_~x c_~two54_log~0))))) is different from true [2021-10-15 19:54:57,353 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 19:54:57,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:54:57,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309415485] [2021-10-15 19:54:57,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309415485] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:57,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:57,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-15 19:54:57,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21487173] [2021-10-15 19:54:57,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:54:57,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:54:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:54:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2021-10-15 19:54:57,358 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2021-10-15 19:54:57,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 19:54:57,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:57,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2021-10-15 19:54:57,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:08,569 INFO L129 PetriNetUnfolder]: 2/35 cut-off events. [2021-10-15 19:55:08,570 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:55:08,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 35 events. 2/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2021-10-15 19:55:08,570 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 9 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2021-10-15 19:55:08,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 96 flow [2021-10-15 19:55:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:55:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:55:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2021-10-15 19:55:08,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2021-10-15 19:55:08,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 119 transitions. [2021-10-15 19:55:08,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 119 transitions. [2021-10-15 19:55:08,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:08,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 119 transitions. [2021-10-15 19:55:08,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 19:55:08,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 19:55:08,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 19:55:08,590 INFO L186 Difference]: Start difference. First operand has 35 places, 36 transitions, 84 flow. Second operand 6 states and 119 transitions. [2021-10-15 19:55:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 96 flow [2021-10-15 19:55:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 87 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:55:08,592 INFO L242 Difference]: Finished difference. Result has 33 places, 28 transitions, 69 flow [2021-10-15 19:55:08,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2021-10-15 19:55:08,592 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2021-10-15 19:55:08,593 INFO L470 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 69 flow [2021-10-15 19:55:08,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 19:55:08,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:08,593 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:55:08,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:08,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:55:08,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1217171362, now seen corresponding path program 1 times [2021-10-15 19:55:08,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:55:08,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921839640] [2021-10-15 19:55:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:08,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:55:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:55:08,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:55:08,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:55:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:09,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 19:55:09,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:12,966 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 19:55:12,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:55:23,249 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_12| (_ BitVec 64))) (or (not (= (fp.mul c_currentRoundingMode c_ULTIMATE.start___ieee754_log_~x c_~two54_log~0) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_12|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_12|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_12|)))) (not (= (let ((.cse0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_12|))) (bvadd c_ULTIMATE.start___ieee754_log_~k~0 (bvashr .cse0 (_ bv20 32)) (bvashr (bvand (_ bv1048576 32) (bvadd (_ bv614244 32) (bvand (_ bv1048575 32) .cse0))) (_ bv20 32)))) (_ bv1077 32))))) is different from true [2021-10-15 19:55:39,187 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_12| (_ BitVec 64))) (or (not (= (fp.mul c_currentRoundingMode c_ULTIMATE.start___ieee754_log_~x c_~two54_log~0) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_12|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_12|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_12|)))) (not (= (let ((.cse0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_12|))) (bvadd (bvashr .cse0 (_ bv20 32)) (bvashr (bvand (_ bv1048576 32) (bvadd (_ bv614244 32) (bvand (_ bv1048575 32) .cse0))) (_ bv20 32)))) (_ bv1077 32))))) is different from true [2021-10-15 19:55:53,393 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 19:55:53,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:55:53,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921839640] [2021-10-15 19:55:53,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921839640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:55:53,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:55:53,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-15 19:55:53,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731375990] [2021-10-15 19:55:53,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 19:55:53,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:55:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 19:55:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=119, Unknown=2, NotChecked=46, Total=210 [2021-10-15 19:55:53,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2021-10-15 19:55:53,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 69 flow. Second operand has 15 states, 15 states have (on average 15.733333333333333) internal successors, (236), 15 states have internal predecessors, (236), 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 19:55:53,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:53,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2021-10-15 19:55:53,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:08,769 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-10-15 19:56:08,769 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:56:08,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 27 events. 2/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 50. Up to 5 conditions per place. [2021-10-15 19:56:08,770 INFO L132 encePairwiseOnDemand]: 40/51 looper letters, 6 selfloop transitions, 10 changer transitions 0/27 dead transitions. [2021-10-15 19:56:08,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 99 flow [2021-10-15 19:56:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:56:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:56:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2021-10-15 19:56:08,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.307843137254902 [2021-10-15 19:56:08,867 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 157 transitions. [2021-10-15 19:56:08,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 157 transitions. [2021-10-15 19:56:08,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:08,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 157 transitions. [2021-10-15 19:56:08,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 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 19:56:08,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 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 19:56:08,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 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 19:56:08,871 INFO L186 Difference]: Start difference. First operand has 33 places, 28 transitions, 69 flow. Second operand 10 states and 157 transitions. [2021-10-15 19:56:08,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 99 flow [2021-10-15 19:56:08,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 87 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-15 19:56:08,873 INFO L242 Difference]: Finished difference. Result has 37 places, 27 transitions, 75 flow [2021-10-15 19:56:08,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=75, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2021-10-15 19:56:08,873 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2021-10-15 19:56:08,874 INFO L470 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 75 flow [2021-10-15 19:56:08,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.733333333333333) internal successors, (236), 15 states have internal predecessors, (236), 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 19:56:08,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:08,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:08,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-15 19:56:09,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:56:09,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:56:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:09,093 INFO L82 PathProgramCache]: Analyzing trace with hash -44684160, now seen corresponding path program 1 times [2021-10-15 19:56:09,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:56:09,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294517296] [2021-10-15 19:56:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:09,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:56:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:56:09,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:56:09,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:56:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:11,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:56:11,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:56:11,212 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 29 treesize of output 27 [2021-10-15 19:56:12,220 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 19:56:12,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:56:12,906 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 19:56:13,249 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 19:56:13,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:56:13,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294517296] [2021-10-15 19:56:13,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294517296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:13,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:13,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 19:56:13,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596298480] [2021-10-15 19:56:13,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:56:13,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:56:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:56:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:56:13,252 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2021-10-15 19:56:13,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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 19:56:13,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:13,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2021-10-15 19:56:13,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:13,449 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-10-15 19:56:13,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:56:13,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:56:13,450 INFO L132 encePairwiseOnDemand]: 48/51 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-10-15 19:56:13,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 6 transitions, 26 flow [2021-10-15 19:56:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:56:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:56:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2021-10-15 19:56:13,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2021-10-15 19:56:13,452 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2021-10-15 19:56:13,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2021-10-15 19:56:13,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:13,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2021-10-15 19:56:13,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 19:56:13,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 19:56:13,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 19:56:13,455 INFO L186 Difference]: Start difference. First operand has 37 places, 27 transitions, 75 flow. Second operand 4 states and 112 transitions. [2021-10-15 19:56:13,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 6 transitions, 26 flow [2021-10-15 19:56:13,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 19 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:56:13,456 INFO L242 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-10-15 19:56:13,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-10-15 19:56:13,457 INFO L334 CegarLoopForPetriNet]: 29 programPoint places, -17 predicate places. [2021-10-15 19:56:13,457 INFO L470 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-10-15 19:56:13,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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 19:56:13,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:56:13,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:56:13,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:56:13,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:56:13,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:56:13 BoogieIcfgContainer [2021-10-15 19:56:13,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:56:13,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:56:13,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:56:13,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:56:13,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:12" (3/4) ... [2021-10-15 19:56:13,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:56:13,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-15 19:56:13,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-15 19:56:13,715 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:13,716 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:13,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:56:13,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:56:13,787 INFO L168 Benchmark]: Toolchain (without parser) took 263672.07 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.9 MB in the beginning and 50.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,788 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:56:13,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.47 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.7 MB in the beginning and 61.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,790 INFO L168 Benchmark]: Boogie Preprocessor took 68.10 ms. Allocated memory is still 79.7 MB. Free memory was 59.6 MB in the beginning and 57.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,790 INFO L168 Benchmark]: RCFGBuilder took 21465.04 ms. Allocated memory is still 79.7 MB. Free memory was 57.7 MB in the beginning and 60.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,790 INFO L168 Benchmark]: TraceAbstraction took 241647.26 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 55.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,791 INFO L168 Benchmark]: Witness Printer took 97.07 ms. Allocated memory is still 79.7 MB. Free memory was 55.1 MB in the beginning and 50.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:13,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.47 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.7 MB in the beginning and 61.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.10 ms. Allocated memory is still 79.7 MB. Free memory was 59.6 MB in the beginning and 57.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 21465.04 ms. Allocated memory is still 79.7 MB. Free memory was 57.7 MB in the beginning and 60.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 241647.26 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 55.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Witness Printer took 97.07 ms. Allocated memory is still 79.7 MB. Free memory was 55.1 MB in the beginning and 50.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 139]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 241571.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 83800.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 73.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 57 SDslu, 157 SDs, 0 SdLazy, 159 SolverSat, 39 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 72806.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 26189.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=2, InterpolantAutomatonStates: 36, 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: 73.3ms SsaConstructionTime, 4300.0ms SatisfiabilityAnalysisTime, 151615.3ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 46 QuantifiedInterpolants, 2059 SizeOfPredicates, 40 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:56:14,009 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-15 19:56:14,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b0650-2e11-4d47-9da6-9537a65b60d4/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...