./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg --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 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 .............................................................................................................................................................................................................................................................................................................................................. 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg --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 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:21:42,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:21:42,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:21:42,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:21:42,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:21:42,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:21:42,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:21:42,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:21:42,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:21:42,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:21:42,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:21:42,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:21:42,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:21:42,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:21:42,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:21:42,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:21:42,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:21:42,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:21:42,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:21:42,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:21:42,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:21:42,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:21:42,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:21:42,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:21:42,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:21:42,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:21:42,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:21:42,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:21:42,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:21:42,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:21:42,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:21:42,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:21:42,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:21:42,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:21:42,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:21:42,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:21:42,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:21:42,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:21:42,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:21:42,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:21:42,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:21:42,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:21:42,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:21:42,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:21:42,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:21:42,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:21:42,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:21:42,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:21:42,484 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:21:42,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:21:42,484 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:21:42,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:21:42,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:21:42,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:21:42,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:21:42,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:21:42,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:21:42,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:21:42,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:21:42,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:21:42,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:21:42,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:21:42,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:21:42,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:21:42,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:21:42,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:21:42,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:21:42,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:21:42,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:21:42,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:21:42,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:21:42,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:21:42,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:21:42,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:21:42,494 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 [2021-10-28 09:21:42,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:21:42,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:21:42,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:21:42,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:21:42,903 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:21:42,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-28 09:21:43,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d32b7139b/6f4c1e3043be47228194942a90e692dc/FLAG6ceef4f59 [2021-10-28 09:21:43,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:21:43,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-28 09:21:43,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d32b7139b/6f4c1e3043be47228194942a90e692dc/FLAG6ceef4f59 [2021-10-28 09:21:43,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d32b7139b/6f4c1e3043be47228194942a90e692dc [2021-10-28 09:21:43,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:21:43,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:21:43,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:21:43,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:21:44,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:21:44,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:21:43" (1/1) ... [2021-10-28 09:21:44,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6fe2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44, skipping insertion in model container [2021-10-28 09:21:44,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:21:43" (1/1) ... [2021-10-28 09:21:44,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:21:44,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:21:44,398 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-28 09:21:44,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:21:44,413 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:21:44,477 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-28 09:21:44,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:21:44,513 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:21:44,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44 WrapperNode [2021-10-28 09:21:44,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:21:44,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:21:44,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:21:44,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:21:44,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:21:44,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:21:44,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:21:44,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:21:44,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:21:44,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:21:44,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:21:44,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:21:44,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (1/1) ... [2021-10-28 09:21:44,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:21:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:44,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:21:44,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:21:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:21:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:21:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 09:21:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:21:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 09:21:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:21:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:21:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:21:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-28 09:21:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:21:45,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:21:45,960 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-28 09:21:45,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:21:45 BoogieIcfgContainer [2021-10-28 09:21:45,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:21:45,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:21:45,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:21:45,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:21:45,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:21:43" (1/3) ... [2021-10-28 09:21:45,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a00fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:21:45, skipping insertion in model container [2021-10-28 09:21:45,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:44" (2/3) ... [2021-10-28 09:21:45,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a00fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:21:45, skipping insertion in model container [2021-10-28 09:21:45,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:21:45" (3/3) ... [2021-10-28 09:21:45,976 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2021-10-28 09:21:45,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:21:45,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:21:46,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:21:46,056 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, mAutomataTypeConcurrency=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 [2021-10-28 09:21:46,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:21:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 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) [2021-10-28 09:21:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:21:46,084 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:46,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:46,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-28 09:21:46,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:46,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184892932] [2021-10-28 09:21:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:46,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:21:46,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:46,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184892932] [2021-10-28 09:21:46,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184892932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:21:46,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:21:46,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:21:46,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723980933] [2021-10-28 09:21:46,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:21:46,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:21:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:21:46,362 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 09:21:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:46,400 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-28 09:21:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:21:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-10-28 09:21:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:46,415 INFO L225 Difference]: With dead ends: 227 [2021-10-28 09:21:46,415 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:21:46,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:21:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:21:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 09:21:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 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) [2021-10-28 09:21:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-28 09:21:46,473 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-28 09:21:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:46,474 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-28 09:21:46,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 09:21:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-28 09:21:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:21:46,475 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:46,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:46,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:21:46,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-28 09:21:46,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:46,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177704711] [2021-10-28 09:21:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:46,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:21:46,627 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:21:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:21:46,820 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:21:46,820 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:21:46,822 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:21:46,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:21:46,829 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:21:46,832 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:21:46,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:21:46 BoogieIcfgContainer [2021-10-28 09:21:46,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:21:46,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:21:46,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:21:46,910 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:21:46,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:21:45" (3/4) ... [2021-10-28 09:21:46,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:21:46,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:21:46,920 INFO L168 Benchmark]: Toolchain (without parser) took 2924.28 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 89.7 MB in the end (delta: -27.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:21:46,921 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory was 68.9 MB in the beginning and 68.9 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:21:46,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.25 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 67.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:46,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.30 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 64.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:46,932 INFO L168 Benchmark]: Boogie Preprocessor took 140.66 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 61.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:46,933 INFO L168 Benchmark]: RCFGBuilder took 1166.63 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 88.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:46,934 INFO L168 Benchmark]: TraceAbstraction took 939.94 ms. Allocated memory is still 119.5 MB. Free memory was 88.9 MB in the beginning and 89.8 MB in the end (delta: -945.7 kB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:46,935 INFO L168 Benchmark]: Witness Printer took 8.93 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 89.7 MB in the end (delta: 124.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:21:46,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory was 68.9 MB in the beginning and 68.9 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 518.25 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 67.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 139.30 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 64.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 140.66 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 61.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1166.63 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 88.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 939.94 ms. Allocated memory is still 119.5 MB. Free memory was 88.9 MB in the beginning and 89.8 MB in the end (delta: -945.7 kB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.93 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 89.7 MB in the end (delta: 124.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: 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 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 260. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L252] double x = __VERIFIER_nondet_double(); [L253] double y = 0.0; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L261] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 [2021-10-28 09:21:47,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/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-b2eff8b [2021-10-28 09:21:49,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:21:49,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:21:49,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:21:49,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:21:49,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:21:49,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:21:49,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:21:49,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:21:49,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:21:49,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:21:49,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:21:49,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:21:49,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:21:49,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:21:49,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:21:49,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:21:49,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:21:49,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:21:49,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:21:49,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:21:49,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:21:49,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:21:49,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:21:49,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:21:49,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:21:49,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:21:49,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:21:49,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:21:49,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:21:49,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:21:49,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:21:49,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:21:49,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:21:49,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:21:49,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:21:49,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:21:49,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:21:49,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:21:49,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:21:49,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:21:49,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:21:50,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:21:50,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:21:50,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:21:50,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:21:50,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:21:50,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:21:50,035 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:21:50,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:21:50,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:21:50,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:21:50,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:21:50,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:21:50,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:21:50,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:21:50,039 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:21:50,040 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:21:50,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:21:50,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:21:50,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:21:50,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:21:50,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:21:50,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:21:50,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:21:50,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:21:50,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:21:50,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:21:50,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:21:50,044 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:21:50,044 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:21:50,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:21:50,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:21:50,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:21:50,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:21:50,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:21:50,046 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 [2021-10-28 09:21:50,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:21:50,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:21:50,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:21:50,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:21:50,599 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:21:50,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-28 09:21:50,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d5d496d12/c9dc8faf66c848fe90fdab4bb9675973/FLAG51d2ae76c [2021-10-28 09:21:51,478 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:21:51,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-28 09:21:51,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d5d496d12/c9dc8faf66c848fe90fdab4bb9675973/FLAG51d2ae76c [2021-10-28 09:21:51,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/data/d5d496d12/c9dc8faf66c848fe90fdab4bb9675973 [2021-10-28 09:21:51,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:21:51,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:21:51,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:21:51,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:21:51,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:21:51,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:21:51" (1/1) ... [2021-10-28 09:21:51,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cba8c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:51, skipping insertion in model container [2021-10-28 09:21:51,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:21:51" (1/1) ... [2021-10-28 09:21:51,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:21:51,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:21:52,103 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-28 09:21:52,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:21:52,145 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:21:52,271 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_e6da2742-4b9a-4add-8ad3-20bd19141bfd/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-28 09:21:52,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:21:52,302 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:21:52,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52 WrapperNode [2021-10-28 09:21:52,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:21:52,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:21:52,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:21:52,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:21:52,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:21:52,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:21:52,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:21:52,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:21:52,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:21:52,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:21:52,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:21:52,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:21:52,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (1/1) ... [2021-10-28 09:21:52,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:21:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:52,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:21:52,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:21:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-28 09:21:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-28 09:21:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:21:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:21:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-28 09:21:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:21:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:21:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:21:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:21:52,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:22:31,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:22:31,688 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-28 09:22:31,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:31 BoogieIcfgContainer [2021-10-28 09:22:31,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:22:31,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:22:31,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:22:31,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:22:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:21:51" (1/3) ... [2021-10-28 09:22:31,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0f890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:31, skipping insertion in model container [2021-10-28 09:22:31,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:21:52" (2/3) ... [2021-10-28 09:22:31,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0f890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:31, skipping insertion in model container [2021-10-28 09:22:31,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:31" (3/3) ... [2021-10-28 09:22:31,701 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2021-10-28 09:22:31,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:22:31,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:22:31,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:22:31,784 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, mAutomataTypeConcurrency=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 [2021-10-28 09:22:31,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:22:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 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) [2021-10-28 09:22:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:22:31,814 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:31,815 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:31,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:31,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:31,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-28 09:22:31,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:22:31,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965153802] [2021-10-28 09:22:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:31,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:22:31,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:22:31,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:22:31,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:22:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:32,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:22:32,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:22:32,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:22:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:22:32,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:22:32,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965153802] [2021-10-28 09:22:32,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965153802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:22:32,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:22:32,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:22:32,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801377553] [2021-10-28 09:22:32,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:22:32,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:22:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:22:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:22:32,900 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 09:22:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:32,937 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-28 09:22:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:22:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-10-28 09:22:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:32,961 INFO L225 Difference]: With dead ends: 227 [2021-10-28 09:22:32,962 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:22:32,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:22:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:22:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 09:22:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 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) [2021-10-28 09:22:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-28 09:22:33,020 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-28 09:22:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-28 09:22:33,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 09:22:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-28 09:22:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:22:33,022 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:33,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:33,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 09:22:33,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:22:33,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:33,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-28 09:22:33,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:22:33,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56640554] [2021-10-28 09:22:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:33,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:22:33,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:22:33,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:22:33,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:22:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:34,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:22:34,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:34,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2021-10-28 09:22:37,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:22:37,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-10-28 09:22:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:22:39,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:08,062 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 74 treesize of output 70 [2021-10-28 09:23:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:33,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:23:33,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56640554] [2021-10-28 09:23:33,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56640554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:33,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:33,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 09:23:33,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288203958] [2021-10-28 09:23:33,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:23:33,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:23:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:23:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=129, Unknown=22, NotChecked=0, Total=182 [2021-10-28 09:23:33,775 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-10-28 09:24:11,489 WARN L207 SmtUtils]: Spent 13.34 s on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-10-28 09:24:27,044 WARN L207 SmtUtils]: Spent 11.84 s on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-10-28 09:25:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:03,856 INFO L93 Difference]: Finished difference Result 176 states and 244 transitions. [2021-10-28 09:25:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:25:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) Word has length 13 [2021-10-28 09:25:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:03,966 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:25:03,966 INFO L226 Difference]: Without dead ends: 117 [2021-10-28 09:25:03,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 102.9s TimeCoverageRelationStatistics Valid=83, Invalid=225, Unknown=34, NotChecked=0, Total=342 [2021-10-28 09:25:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-28 09:25:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2021-10-28 09:25:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 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) [2021-10-28 09:25:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2021-10-28 09:25:03,990 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 13 [2021-10-28 09:25:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:03,991 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2021-10-28 09:25:03,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-10-28 09:25:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2021-10-28 09:25:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:25:03,993 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:03,993 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:04,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:04,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:25:04,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:25:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:04,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1171723193, now seen corresponding path program 1 times [2021-10-28 09:25:04,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:25:04,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963200202] [2021-10-28 09:25:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:04,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:25:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:25:04,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:25:04,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:25:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:04,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:10,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:25:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:15,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:25:15,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963200202] [2021-10-28 09:25:15,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963200202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:15,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:15,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-28 09:25:15,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996264659] [2021-10-28 09:25:15,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:25:15,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:25:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:25:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=51, Unknown=3, NotChecked=0, Total=72 [2021-10-28 09:25:15,662 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-28 09:25:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:23,316 INFO L93 Difference]: Finished difference Result 180 states and 245 transitions. [2021-10-28 09:25:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:25:23,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) Word has length 18 [2021-10-28 09:25:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:23,319 INFO L225 Difference]: With dead ends: 180 [2021-10-28 09:25:23,319 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:25:23,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=44, Invalid=85, Unknown=3, NotChecked=0, Total=132 [2021-10-28 09:25:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:25:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 09:25:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 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) [2021-10-28 09:25:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2021-10-28 09:25:23,339 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 18 [2021-10-28 09:25:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:23,339 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2021-10-28 09:25:23,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-28 09:25:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2021-10-28 09:25:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:25:23,341 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:23,341 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:23,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:25:23,542 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:25:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash -960415812, now seen corresponding path program 1 times [2021-10-28 09:25:23,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:25:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881813735] [2021-10-28 09:25:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:25:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:25:23,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:25:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:23,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:23,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:27,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:25:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:32,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:25:32,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881813735] [2021-10-28 09:25:32,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881813735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:32,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:32,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-28 09:25:32,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281018081] [2021-10-28 09:25:32,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:25:32,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:25:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:25:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2021-10-28 09:25:32,310 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-28 09:25:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:40,584 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2021-10-28 09:25:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:25:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) Word has length 19 [2021-10-28 09:25:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:40,586 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:25:40,587 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:25:40,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=44, Invalid=87, Unknown=1, NotChecked=0, Total=132 [2021-10-28 09:25:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:25:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 09:25:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 75 states have internal predecessors, (98), 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) [2021-10-28 09:25:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-28 09:25:40,598 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 19 [2021-10-28 09:25:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:40,598 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-28 09:25:40,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-28 09:25:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-28 09:25:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:25:40,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:40,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:40,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:40,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:25:40,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:25:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash -195557417, now seen corresponding path program 1 times [2021-10-28 09:25:40,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:25:40,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252598389] [2021-10-28 09:25:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:40,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:25:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:25:40,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:25:40,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:25:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:41,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:25:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:46,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:25:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:58,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:25:58,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252598389] [2021-10-28 09:25:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252598389] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:58,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:25:58,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565213020] [2021-10-28 09:25:58,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:25:58,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:25:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:25:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:25:58,624 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-10-28 09:26:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:26:47,200 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2021-10-28 09:26:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:26:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) Word has length 19 [2021-10-28 09:26:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:26:47,234 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:26:47,234 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:26:47,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:26:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:26:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 09:26:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-10-28 09:26:47,242 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 19 [2021-10-28 09:26:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:26:47,243 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-10-28 09:26:47,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-10-28 09:26:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-10-28 09:26:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:26:47,245 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:26:47,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:47,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:47,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:26:47,470 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:26:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1774047840, now seen corresponding path program 1 times [2021-10-28 09:26:47,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:26:47,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269479702] [2021-10-28 09:26:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:47,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:26:47,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:26:47,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:26:47,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:26:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:26:48,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:26:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:26:53,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:26:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:26:59,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:26:59,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269479702] [2021-10-28 09:26:59,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269479702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:59,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:59,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 09:26:59,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764694634] [2021-10-28 09:26:59,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:26:59,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:26:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:26:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:26:59,142 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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) [2021-10-28 09:27:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:08,720 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2021-10-28 09:27:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:27:08,721 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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) Word has length 20 [2021-10-28 09:27:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:08,723 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:27:08,723 INFO L226 Difference]: Without dead ends: 70 [2021-10-28 09:27:08,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:27:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-28 09:27:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-28 09:27:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 69 states have internal predecessors, (88), 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) [2021-10-28 09:27:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2021-10-28 09:27:08,731 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 20 [2021-10-28 09:27:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:08,732 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2021-10-28 09:27:08,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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) [2021-10-28 09:27:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2021-10-28 09:27:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:27:08,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:08,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:08,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-28 09:27:08,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:08,951 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:27:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1297758981, now seen corresponding path program 1 times [2021-10-28 09:27:08,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:08,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743586296] [2021-10-28 09:27:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:08,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:08,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:08,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:27:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:09,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:27:09,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:14,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:20,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:20,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743586296] [2021-10-28 09:27:20,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743586296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:20,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:20,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 09:27:20,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549824980] [2021-10-28 09:27:20,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:27:20,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:27:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:27:20,031 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-10-28 09:27:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:25,916 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-10-28 09:27:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:27:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) Word has length 21 [2021-10-28 09:27:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:26,137 INFO L225 Difference]: With dead ends: 89 [2021-10-28 09:27:26,137 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:27:26,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:27:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:27:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-10-28 09:27:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 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) [2021-10-28 09:27:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-10-28 09:27:26,147 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 21 [2021-10-28 09:27:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:26,148 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-10-28 09:27:26,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-10-28 09:27:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-10-28 09:27:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:27:26,149 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:26,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:26,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:26,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:26,359 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:27:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash 622691325, now seen corresponding path program 1 times [2021-10-28 09:27:26,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:26,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538090344] [2021-10-28 09:27:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:26,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:26,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:26,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:26,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:27:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:26,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:27:26,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:32,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:37,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:37,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538090344] [2021-10-28 09:27:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538090344] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:37,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 09:27:37,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633373132] [2021-10-28 09:27:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:27:37,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:27:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:27:37,364 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2021-10-28 09:27:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:45,412 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2021-10-28 09:27:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:27:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) Word has length 22 [2021-10-28 09:27:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:45,414 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:27:45,414 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 09:27:45,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:27:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 09:27:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2021-10-28 09:27:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 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) [2021-10-28 09:27:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-10-28 09:27:45,424 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 22 [2021-10-28 09:27:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:45,425 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-10-28 09:27:45,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2021-10-28 09:27:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-10-28 09:27:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:27:45,426 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:45,426 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:45,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:45,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:45,651 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:27:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash -804510387, now seen corresponding path program 1 times [2021-10-28 09:27:45,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:45,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218703913] [2021-10-28 09:27:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:45,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:45,654 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:45,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:27:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:46,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:27:46,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:47,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:49,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:49,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218703913] [2021-10-28 09:27:49,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218703913] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:49,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:49,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 09:27:49,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171990894] [2021-10-28 09:27:49,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:27:49,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:27:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:27:49,344 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-10-28 09:27:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:56,371 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2021-10-28 09:27:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:27:56,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) Word has length 22 [2021-10-28 09:27:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:56,373 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:27:56,373 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:27:56,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:27:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:27:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2021-10-28 09:27:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 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) [2021-10-28 09:27:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-10-28 09:27:56,382 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 22 [2021-10-28 09:27:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:56,382 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-10-28 09:27:56,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-10-28 09:27:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-10-28 09:27:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:27:56,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:56,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:56,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:56,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:56,590 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:27:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 3554504, now seen corresponding path program 1 times [2021-10-28 09:27:56,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:56,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865929833] [2021-10-28 09:27:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:56,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:56,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:56,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:56,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:27:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:57,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:27:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:28:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:03,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:28:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:42,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:28:42,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865929833] [2021-10-28 09:28:42,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865929833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:28:42,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:28:42,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:28:42,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180451879] [2021-10-28 09:28:42,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:28:42,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:28:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:28:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=64, Unknown=3, NotChecked=0, Total=90 [2021-10-28 09:28:42,627 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 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) [2021-10-28 09:29:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:29:57,112 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-28 09:29:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:29:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 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) Word has length 24 [2021-10-28 09:29:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:29:57,136 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:29:57,136 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:29:57,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=42, Invalid=87, Unknown=3, NotChecked=0, Total=132 [2021-10-28 09:29:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:29:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-28 09:29:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 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) [2021-10-28 09:29:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2021-10-28 09:29:57,142 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 24 [2021-10-28 09:29:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:29:57,142 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2021-10-28 09:29:57,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 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) [2021-10-28 09:29:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2021-10-28 09:29:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:29:57,143 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:29:57,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:29:57,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:29:57,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:29:57,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:29:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:29:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 111855477, now seen corresponding path program 1 times [2021-10-28 09:29:57,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:29:57,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788471447] [2021-10-28 09:29:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:29:57,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:29:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:29:57,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:29:57,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:29:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:29:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:29:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:30:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:30:02,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:30:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:30:08,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:30:08,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788471447] [2021-10-28 09:30:08,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788471447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:30:08,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:30:08,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:30:08,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013730506] [2021-10-28 09:30:08,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:30:08,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:30:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:30:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:30:08,411 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-10-28 09:30:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:30:17,544 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2021-10-28 09:30:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:30:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) Word has length 25 [2021-10-28 09:30:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:30:17,545 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:30:17,545 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 09:30:17,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:30:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 09:30:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-28 09:30:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) [2021-10-28 09:30:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-10-28 09:30:17,554 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 25 [2021-10-28 09:30:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:30:17,555 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-10-28 09:30:17,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-10-28 09:30:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-10-28 09:30:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:30:17,557 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:30:17,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:30:17,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:30:17,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:30:17,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:30:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:30:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash -490549731, now seen corresponding path program 1 times [2021-10-28 09:30:17,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:30:17,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341836421] [2021-10-28 09:30:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:30:17,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:30:17,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:30:17,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:30:17,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:30:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:30:19,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:30:19,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:30:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:30:29,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:30:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:30:36,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:30:36,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341836421] [2021-10-28 09:30:36,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341836421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:30:36,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:30:36,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 14 [2021-10-28 09:30:36,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081374103] [2021-10-28 09:30:36,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:30:36,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:30:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:30:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2021-10-28 09:30:36,862 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2021-10-28 09:30:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:30:53,801 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-10-28 09:30:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:30:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) Word has length 36 [2021-10-28 09:30:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:30:53,833 INFO L225 Difference]: With dead ends: 67 [2021-10-28 09:30:53,833 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:30:53,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=79, Invalid=226, Unknown=1, NotChecked=0, Total=306 [2021-10-28 09:30:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:30:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-28 09:30:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 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) [2021-10-28 09:30:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-28 09:30:53,841 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 36 [2021-10-28 09:30:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:30:53,842 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-28 09:30:53,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2021-10-28 09:30:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-28 09:30:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:30:53,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:30:53,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:30:53,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:30:54,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:30:54,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:30:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:30:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1072034200, now seen corresponding path program 1 times [2021-10-28 09:30:54,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:30:54,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359227930] [2021-10-28 09:30:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:30:54,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:30:54,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:30:54,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:30:54,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:30:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:30:55,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:30:55,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:02,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-10-28 09:31:08,850 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:31:08,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2021-10-28 09:32:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:27,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:32:37,075 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start___ieee754_atan2_~z~1 c_~pi_lo_atan2~0)) c_~pi~0) is different from false [2021-10-28 09:32:48,430 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_atan_double_#res| c_~pi_lo_atan2~0)) c_~pi~0) is different from false [2021-10-28 09:33:09,315 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:33:09,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:33:09,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359227930] [2021-10-28 09:33:09,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 09:33:09,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595011093] [2021-10-28 09:33:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:33:09,317 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:33:09,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:33:09,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 09:33:09,326 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:33:09,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-28 09:33:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:33:13,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:33:13,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5eded444 [2021-10-28 09:33:13,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292232100] [2021-10-28 09:33:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:33:13,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:33:13,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:33:13,516 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:33:13,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:33:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:33:14,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:33:14,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5eded444 [2021-10-28 09:33:14,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:33:14,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:33:14,889 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:33:14,889 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:33:14,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:33:14,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:33:15,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:33:15,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-28 09:33:15,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6da2742-4b9a-4add-8ad3-20bd19141bfd/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt [2021-10-28 09:33:15,500 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:33:15,501 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:33:15,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:33:15 BoogieIcfgContainer [2021-10-28 09:33:15,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:33:15,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:33:15,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:33:15,526 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:33:15,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:31" (3/4) ... [2021-10-28 09:33:15,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:33:15,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:33:15,530 INFO L168 Benchmark]: Toolchain (without parser) took 683748.85 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.2 MB in the beginning and 38.5 MB in the end (delta: -7.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,530 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 35.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:33:15,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.14 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 50.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.59 ms. Allocated memory is still 71.3 MB. Free memory was 50.5 MB in the beginning and 47.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,531 INFO L168 Benchmark]: Boogie Preprocessor took 132.46 ms. Allocated memory is still 71.3 MB. Free memory was 47.0 MB in the beginning and 43.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,531 INFO L168 Benchmark]: RCFGBuilder took 39124.95 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 35.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,532 INFO L168 Benchmark]: TraceAbstraction took 643832.48 ms. Allocated memory is still 71.3 MB. Free memory was 35.3 MB in the beginning and 38.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:15,532 INFO L168 Benchmark]: Witness Printer took 3.44 ms. Allocated memory is still 71.3 MB. Free memory was 38.9 MB in the beginning and 38.5 MB in the end (delta: 417.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:33:15,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 35.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.14 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 50.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 126.59 ms. Allocated memory is still 71.3 MB. Free memory was 50.5 MB in the beginning and 47.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.46 ms. Allocated memory is still 71.3 MB. Free memory was 47.0 MB in the beginning and 43.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 39124.95 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 35.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 643832.48 ms. Allocated memory is still 71.3 MB. Free memory was 35.3 MB in the beginning and 38.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.44 ms. Allocated memory is still 71.3 MB. Free memory was 38.9 MB in the beginning and 38.5 MB in the end (delta: 417.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L252] double x = __VERIFIER_nondet_double(); [L253] double y = 0.0; [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND FALSE !(((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000)) [L166] COND FALSE !(((hx - 0x3ff00000) | lx) == 0) [L168] m = ((hy >> 31) & 1) | ((hx >> 30) & 2) [L170] COND FALSE !((iy | ly) == 0) [L182] COND FALSE !((ix | lx) == 0) [L185] COND FALSE !(ix == 0x7ff00000) [L211] COND FALSE !(iy == 0x7ff00000) [L214] k = (iy - ix) >> 20 [L215] COND FALSE !(k > 60) [L217] COND FALSE !(hx < 0 && k < -60) [L20] __uint32_t high; [L22] ieee_double_shape_type gh_u; [L23] gh_u.value = (x) [L24] EXPR gh_u.parts.msw [L24] (high) = gh_u.parts.msw [L27] ieee_double_shape_type sh_u; [L28] sh_u.value = (x) [L29] sh_u.parts.msw = (high & 0x7fffffff) [L30] EXPR sh_u.value [L30] (x) = sh_u.value [L32] return x; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND FALSE !(ix >= 0x44100000) [L90] COND TRUE ix < 0x3fdc0000 [L91] COND TRUE ix < 0x3e200000 [L92] COND TRUE huge_atan + x > one_atan [L93] return x; [L220] z = atan_double(fabs_double(y / x)) [L222] case 0: [L224] case 1: [L239] case 2: [L240] return pi - (z - pi_lo_atan2); [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != pi [L261] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 643.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 286.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1036 SDtfs, 2759 SDslu, 3679 SDs, 0 SdLazy, 556 SolverSat, 88 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 192.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 521 GetRequests, 370 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 213.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 92 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 6.7s SatisfiabilityAnalysisTime, 339.4s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 513 ConstructedInterpolants, 185 QuantifiedInterpolants, 7237 SizeOfPredicates, 123 NumberOfNonLiveVariables, 1939 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 Received shutdown request...