./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:45:25,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:45:25,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:45:25,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:45:25,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:45:25,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:45:25,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:45:25,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:45:25,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:45:25,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:45:25,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:45:25,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:45:25,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:45:25,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:45:25,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:45:25,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:45:25,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:45:25,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:45:25,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:45:25,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:45:25,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:45:25,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:45:25,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:45:25,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:45:25,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:45:25,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:45:25,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:45:25,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:45:25,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:45:25,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:45:25,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:45:25,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:45:25,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:45:25,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:45:25,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:45:25,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:45:25,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:45:25,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:45:25,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:45:25,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:45:25,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:45:25,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:45:25,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:45:25,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:45:25,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:45:25,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:45:25,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:45:25,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:45:25,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:45:25,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:45:25,941 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:45:25,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:45:25,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:45:25,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:45:25,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:45:25,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:45:25,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:45:25,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:45:25,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:45:25,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:45:25,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:45:25,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:45:25,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:45:25,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:45:25,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:45:25,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:45:25,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:25,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:45:25,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:45:25,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:45:25,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:45:25,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:45:25,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:45:25,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:45:25,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:45:25,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:45:25,947 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_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-11-13 17:45:26,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:45:26,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:45:26,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:45:26,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:45:26,272 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:45:26,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-11-13 17:45:26,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/192546fff/8c87e7f1694f4ee1964295c48d4e0c2d/FLAG823aa10ab [2021-11-13 17:45:26,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:45:26,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c [2021-11-13 17:45:26,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/192546fff/8c87e7f1694f4ee1964295c48d4e0c2d/FLAG823aa10ab [2021-11-13 17:45:27,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/192546fff/8c87e7f1694f4ee1964295c48d4e0c2d [2021-11-13 17:45:27,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:45:27,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:45:27,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:27,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:45:27,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:45:27,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347bf430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27, skipping insertion in model container [2021-11-13 17:45:27,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:45:27,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:45:27,524 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_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-11-13 17:45:27,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:27,556 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:45:27,569 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_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-11-13 17:45:27,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:27,593 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:45:27,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27 WrapperNode [2021-11-13 17:45:27,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:27,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:27,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:45:27,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:45:27,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:27,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:45:27,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:45:27,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:45:27,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:45:27,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:45:27,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:45:27,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:45:27,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (1/1) ... [2021-11-13 17:45:27,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:27,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:45:27,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:45:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure y [2021-11-13 17:45:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2021-11-13 17:45:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:45:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:45:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:45:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:45:28,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:28,076 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:45:28,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:28 BoogieIcfgContainer [2021-11-13 17:45:28,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:28,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:28,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:28,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:28,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:27" (1/3) ... [2021-11-13 17:45:28,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3538e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:28, skipping insertion in model container [2021-11-13 17:45:28,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:27" (2/3) ... [2021-11-13 17:45:28,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3538e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:28, skipping insertion in model container [2021-11-13 17:45:28,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:28" (3/3) ... [2021-11-13 17:45:28,089 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-11-13 17:45:28,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:28,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:45:28,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:28,153 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 [2021-11-13 17:45:28,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:45:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 17:45:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:45:28,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:28,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:28,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times [2021-11-13 17:45:28,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:28,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368927647] [2021-11-13 17:45:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:28,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:45:28,329 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:45:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:45:28,390 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:45:28,392 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:45:28,393 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:45:28,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:45:28,401 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 17:45:28,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:45:28,420 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:45:28,424 INFO L158 Benchmark]: Toolchain (without parser) took 1149.45ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 51.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-13 17:45:28,425 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:45:28,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.39ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 77.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:45:28,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.70ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:45:28,428 INFO L158 Benchmark]: Boogie Preprocessor took 59.47ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:45:28,429 INFO L158 Benchmark]: RCFGBuilder took 365.49ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 65.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:45:28,430 INFO L158 Benchmark]: TraceAbstraction took 341.95ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 51.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 17:45:28,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.39ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 77.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.70ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.47ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 365.49ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 65.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 341.95ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 51.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:45:28,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:45:31,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:45:31,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:45:31,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:45:31,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:45:31,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:45:31,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:45:31,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:45:31,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:45:31,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:45:31,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:45:31,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:45:31,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:45:31,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:45:31,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:45:31,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:45:31,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:45:31,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:45:31,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:45:31,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:45:31,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:45:31,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:45:31,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:45:31,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:45:31,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:45:31,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:45:31,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:45:31,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:45:31,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:45:31,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:45:31,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:45:31,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:45:31,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:45:31,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:45:31,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:45:31,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:45:31,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:45:31,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:45:31,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:45:31,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:45:31,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:45:31,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:45:31,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:45:31,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:45:31,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:45:31,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:45:31,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:45:31,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:45:31,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:45:31,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:45:31,439 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:45:31,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:45:31,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:45:31,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:45:31,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:45:31,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:45:31,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:45:31,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:45:31,442 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:45:31,442 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:45:31,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:45:31,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:45:31,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:45:31,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:45:31,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:45:31,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:45:31,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:45:31,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:31,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:45:31,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:45:31,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:45:31,445 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:45:31,446 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:45:31,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:45:31,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:45:31,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:45:31,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:45:31,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:45:31,447 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_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-11-13 17:45:31,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:45:31,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:45:31,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:45:31,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:45:31,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:45:31,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-11-13 17:45:32,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/5f33c81d8/e69c93472297408db71a3320ab3ae5a1/FLAGed923219c [2021-11-13 17:45:32,694 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:45:32,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c [2021-11-13 17:45:32,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/5f33c81d8/e69c93472297408db71a3320ab3ae5a1/FLAGed923219c [2021-11-13 17:45:33,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/data/5f33c81d8/e69c93472297408db71a3320ab3ae5a1 [2021-11-13 17:45:33,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:45:33,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:45:33,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:33,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:45:33,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:45:33,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3fe570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33, skipping insertion in model container [2021-11-13 17:45:33,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:45:33,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:45:33,324 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_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-11-13 17:45:33,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:33,375 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:45:33,393 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_b12e262f-d548-4adb-962c-dfe65c8a0488/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-11-13 17:45:33,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:33,443 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:45:33,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33 WrapperNode [2021-11-13 17:45:33,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:33,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:33,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:45:33,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:45:33,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:33,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:45:33,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:45:33,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:45:33,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:45:33,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:45:33,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:45:33,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:45:33,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (1/1) ... [2021-11-13 17:45:33,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:33,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:45:33,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure y [2021-11-13 17:45:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2021-11-13 17:45:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:45:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:45:38,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:38,024 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:45:38,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:38 BoogieIcfgContainer [2021-11-13 17:45:38,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:38,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:38,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:38,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:38,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:33" (1/3) ... [2021-11-13 17:45:38,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f87f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:38, skipping insertion in model container [2021-11-13 17:45:38,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:33" (2/3) ... [2021-11-13 17:45:38,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f87f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:38, skipping insertion in model container [2021-11-13 17:45:38,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:38" (3/3) ... [2021-11-13 17:45:38,037 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-11-13 17:45:38,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:38,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:45:38,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:38,109 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 [2021-11-13 17:45:38,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:45:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 17:45:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:45:38,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:38,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:38,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times [2021-11-13 17:45:38,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:38,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923260553] [2021-11-13 17:45:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:38,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:38,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:38,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:38,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:45:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:41,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:45:41,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:45:48,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:29,187 WARN L227 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:47:09,659 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (.cse3 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (let ((.cse2 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| |c_y_#res|))) (and (fp.geq .cse2 .cse3) (fp.leq .cse2 .cse1))) (not (fp.geq .cse0 .cse3)))))) is different from true [2021-11-13 17:48:31,656 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (.cse1 (fp.neg .cse2))) (or (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_3| (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0)))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 .cse2))) (not (fp.leq .cse3 .cse2)) (not (fp.geq .cse3 .cse1)))))) is different from true [2021-11-13 17:48:54,731 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-11-13 17:48:56,763 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-11-13 17:49:40,313 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0) c_~ui~0))) (.cse3 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (let ((.cse2 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0)))) (and (fp.leq .cse2 .cse1) (fp.geq .cse2 .cse3))) (not (fp.geq .cse0 .cse3)))))) is different from true [2021-11-13 17:51:05,770 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0) c_~ui~0))) (.cse3 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (let ((.cse2 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_4| (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0)))) (and (fp.leq .cse2 .cse1) (fp.geq .cse2 .cse3))) (not (fp.geq .cse0 .cse3)))))) is different from true [2021-11-13 17:51:16,036 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-11-13 17:51:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-13 17:51:17,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:17,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923260553] [2021-11-13 17:51:17,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923260553] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:17,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:17,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2021-11-13 17:51:17,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813492359] [2021-11-13 17:51:17,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:17,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:51:17,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:17,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:51:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=109, Unknown=9, NotChecked=150, Total=306 [2021-11-13 17:51:17,772 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:25,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:27,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:31,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:33,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:35,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:37,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:39,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:45,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:45,065 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-11-13 17:51:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-13 17:51:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:45,814 INFO L225 Difference]: With dead ends: 54 [2021-11-13 17:51:45,814 INFO L226 Difference]: Without dead ends: 27 [2021-11-13 17:51:45,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=57, Invalid=168, Unknown=9, NotChecked=186, Total=420 [2021-11-13 17:51:45,823 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23727.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25263.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:45,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 61 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 25263.87ms Time] [2021-11-13 17:51:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-13 17:51:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-11-13 17:51:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:51:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-13 17:51:45,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2021-11-13 17:51:45,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:45,896 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-13 17:51:45,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-13 17:51:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:51:45,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:45,898 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:45,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:46,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:46,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash -888289639, now seen corresponding path program 1 times [2021-11-13 17:51:46,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:46,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102517078] [2021-11-13 17:51:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:46,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:46,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:46,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:46,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:51:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-13 17:51:51,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:52,043 WARN L227 SmtUtils]: Spent 12.38s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:54:24,571 WARN L227 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:54:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 3 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 17:54:25,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:25,375 WARN L227 SmtUtils]: Spent 11.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:56:05,402 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (.cse1 (fp.neg .cse2))) (or (not (fp.geq .cse0 .cse1)) (not (fp.leq .cse0 .cse2)) (let ((.cse3 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| |c_y_#res|))) (and (fp.geq .cse3 .cse1) (fp.leq .cse3 .cse2))))))) is different from true [2021-11-13 17:57:25,460 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse2)) (.cse3 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0)))) (or (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_8| (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0)))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 .cse2))) (not (fp.geq .cse3 .cse1)) (not (fp.leq .cse3 .cse2)))))) is different from true [2021-11-13 17:57:47,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:57:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102517078] [2021-11-13 17:57:47,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 28093 column 7: push canceled [2021-11-13 17:57:47,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938183165] [2021-11-13 17:57:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:47,133 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 17:57:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 17:57:47,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 17:57:47,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-13 17:58:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:01,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-13 17:58:01,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:58:01,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-11-13 17:58:01,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145800215] [2021-11-13 17:58:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:01,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:58:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:58:01,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:58:01,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12e262f-d548-4adb-962c-dfe65c8a0488/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process