./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.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_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD --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 cb6ce2ff229d0487f93903d488050ba589e9ec8da79902739cdfa980edb7ba6d ....................................................................................................................................................................................................................................................... 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD --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 cb6ce2ff229d0487f93903d488050ba589e9ec8da79902739cdfa980edb7ba6d .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:54:42,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:42,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:42,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:42,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:42,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:42,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:42,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:42,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:42,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:42,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:42,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:42,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:42,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:42,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:42,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:42,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:42,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:42,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:42,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:42,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:42,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:42,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:42,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:42,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:42,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:42,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:42,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:42,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:42,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:42,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:42,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:42,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:42,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:42,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:42,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:42,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:42,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:42,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:42,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:42,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:42,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:54:42,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:42,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:42,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:42,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:42,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:42,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:42,919 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:42,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:42,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:42,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:42,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:42,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:42,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:54:42,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:42,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:54:42,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:42,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:54:42,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:42,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:54:42,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:42,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:42,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:42,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:42,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:42,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:42,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:54:42,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:42,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:54:42,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:54:42,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:54:42,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:54:42,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:42,926 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb6ce2ff229d0487f93903d488050ba589e9ec8da79902739cdfa980edb7ba6d [2021-10-28 22:54:43,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:43,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:43,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:43,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:43,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:43,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2021-10-28 22:54:43,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/8d6688717/4e05d452201d4f94bb726db04c026c18/FLAGed8f1a03c [2021-10-28 22:54:43,797 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:43,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2021-10-28 22:54:43,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/8d6688717/4e05d452201d4f94bb726db04c026c18/FLAGed8f1a03c [2021-10-28 22:54:44,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/8d6688717/4e05d452201d4f94bb726db04c026c18 [2021-10-28 22:54:44,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:44,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:54:44,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:44,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:44,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:44,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddb1f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44, skipping insertion in model container [2021-10-28 22:54:44,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:44,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:44,401 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c[712,725] [2021-10-28 22:54:44,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:44,436 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:44,447 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c[712,725] [2021-10-28 22:54:44,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:44,466 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:44,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44 WrapperNode [2021-10-28 22:54:44,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:44,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:44,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:54:44,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:54:44,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:44,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:44,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:44,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:44,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:44,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:44,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:44,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:44,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (1/1) ... [2021-10-28 22:54:44,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:44,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:44,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:44,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:54:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:44,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:44,890 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 22:54:44,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:44 BoogieIcfgContainer [2021-10-28 22:54:44,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:44,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:44,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:44,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:44,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:44" (1/3) ... [2021-10-28 22:54:44,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b2c21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:44, skipping insertion in model container [2021-10-28 22:54:44,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:44" (2/3) ... [2021-10-28 22:54:44,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b2c21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:44, skipping insertion in model container [2021-10-28 22:54:44,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:44" (3/3) ... [2021-10-28 22:54:44,901 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2021-10-28 22:54:44,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:44,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 22:54:44,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:44,972 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 22:54:44,972 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 22:54:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 22:54:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 22:54:44,989 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:44,990 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:54:44,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:54:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 22:54:45,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:45,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869377433] [2021-10-28 22:54:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:45,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:45,110 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:45,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:45,156 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:54:45,158 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:45,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:45,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:54:45,164 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 22:54:45,167 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:54:45,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:54:45 BoogieIcfgContainer [2021-10-28 22:54:45,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:54:45,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:45,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:45,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:45,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:44" (3/4) ... [2021-10-28 22:54:45,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:54:45,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:45,197 INFO L168 Benchmark]: Toolchain (without parser) took 1004.62 ms. Allocated memory is still 107.0 MB. Free memory was 68.7 MB in the beginning and 56.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,198 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:45,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.61 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 82.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.22 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,200 INFO L168 Benchmark]: Boogie Preprocessor took 23.64 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 79.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:45,201 INFO L168 Benchmark]: RCFGBuilder took 364.26 ms. Allocated memory is still 107.0 MB. Free memory was 79.6 MB in the beginning and 70.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,202 INFO L168 Benchmark]: TraceAbstraction took 296.32 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 56.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,203 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 107.0 MB. Free memory was 56.6 MB in the beginning and 56.3 MB in the end (delta: 303.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:45,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.61 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 82.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.22 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.64 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 79.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.26 ms. Allocated memory is still 107.0 MB. Free memory was 79.6 MB in the beginning and 70.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 296.32 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 56.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.43 ms. Allocated memory is still 107.0 MB. Free memory was 56.6 MB in the beginning and 56.3 MB in the end (delta: 303.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 22:54:45,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:54:47,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:47,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:47,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:47,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:47,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:47,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:47,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:47,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:47,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:47,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:47,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:47,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:47,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:47,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:47,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:47,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:47,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:47,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:47,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:47,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:47,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:47,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:47,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:47,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:47,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:47,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:47,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:47,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:47,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:47,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:47,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:47,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:47,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:47,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:47,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:47,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:47,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:47,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:47,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:47,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:47,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 22:54:47,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:47,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:47,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:47,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:47,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:47,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:47,992 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:47,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:47,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:47,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:47,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:47,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:54:47,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:47,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:54:47,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:54:47,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:54:47,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:47,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:54:47,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:47,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:54:47,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:47,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:47,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:47,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:47,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:47,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:47,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:54:47,998 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:54:47,998 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:54:47,998 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:54:47,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:54:47,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:54:47,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:47,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:54:47,999 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb6ce2ff229d0487f93903d488050ba589e9ec8da79902739cdfa980edb7ba6d [2021-10-28 22:54:48,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:48,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:48,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:48,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:48,414 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:48,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2021-10-28 22:54:48,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/4f192c223/7c98eeb04eb2445b9ae70ccba38a2afe/FLAG0cfd8586d [2021-10-28 22:54:49,014 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:49,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2021-10-28 22:54:49,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/4f192c223/7c98eeb04eb2445b9ae70ccba38a2afe/FLAG0cfd8586d [2021-10-28 22:54:49,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/data/4f192c223/7c98eeb04eb2445b9ae70ccba38a2afe [2021-10-28 22:54:49,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:49,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:54:49,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:49,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:49,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:49,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ccf93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49, skipping insertion in model container [2021-10-28 22:54:49,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:49,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:49,623 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c[712,725] [2021-10-28 22:54:49,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:49,678 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:49,717 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_85b50ddd-8793-49d2-9f23-b05838d4bb61/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c[712,725] [2021-10-28 22:54:49,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:49,740 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:49,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49 WrapperNode [2021-10-28 22:54:49,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:49,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:49,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:54:49,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:54:49,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:49,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:49,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:49,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:49,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:49,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:49,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:49,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:49,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:49,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:49,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 22:54:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:49,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:55,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:55,351 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 22:54:55,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:55 BoogieIcfgContainer [2021-10-28 22:54:55,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:55,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:55,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:55,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:49" (1/3) ... [2021-10-28 22:54:55,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab1e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:55, skipping insertion in model container [2021-10-28 22:54:55,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (2/3) ... [2021-10-28 22:54:55,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab1e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:55, skipping insertion in model container [2021-10-28 22:54:55,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:55" (3/3) ... [2021-10-28 22:54:55,364 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2021-10-28 22:54:55,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:55,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 22:54:55,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:55,447 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 22:54:55,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 22:54:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 22:54:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 22:54:55,466 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:55,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:54:55,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:54:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 22:54:55,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:54:55,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933546794] [2021-10-28 22:54:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:55,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:54:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:54:55,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:54:55,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:54:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:58,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:54:58,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:22,564 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))))) is different from false [2021-10-28 22:55:30,833 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-10-28 22:55:32,870 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-10-28 22:55:32,872 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 22:55:32,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:55:39,232 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-28 22:55:41,291 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-28 22:55:51,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-10-28 22:55:52,717 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 22:55:52,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:55:52,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933546794] [2021-10-28 22:55:52,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933546794] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:52,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:52,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-28 22:55:52,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131550586] [2021-10-28 22:55:52,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:55:52,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:55:52,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:55:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=14, Unknown=6, NotChecked=36, Total=72 [2021-10-28 22:55:52,748 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 22:55:55,769 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 22:55:57,825 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 22:55:59,879 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 22:56:01,938 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 22:56:03,993 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse0 (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))))))) is different from false [2021-10-28 22:56:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:13,309 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-10-28 22:56:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:56:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 6 [2021-10-28 22:56:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:13,338 INFO L225 Difference]: With dead ends: 37 [2021-10-28 22:56:13,339 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 22:56:13,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=22, Invalid=15, Unknown=11, NotChecked=84, Total=132 [2021-10-28 22:56:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 22:56:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-28 22:56:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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 22:56:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-28 22:56:13,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-28 22:56:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:13,370 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 22:56:13,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 22:56:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-28 22:56:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 22:56:13,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:13,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:13,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 22:56:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:13,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:56:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-28 22:56:13,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:13,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707186344] [2021-10-28 22:56:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:13,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:13,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:13,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:13,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:56:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:14,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:56:14,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:14,244 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 22:56:14,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:14,386 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 22:56:14,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:14,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707186344] [2021-10-28 22:56:14,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707186344] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:14,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:14,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 22:56:14,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179356169] [2021-10-28 22:56:14,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:56:14,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:56:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:56:14,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:56:14,391 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 22:56:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:17,700 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 22:56:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:56:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 7 [2021-10-28 22:56:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:17,702 INFO L225 Difference]: With dead ends: 19 [2021-10-28 22:56:17,703 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 22:56:17,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:56:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 22:56:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 22:56:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 22:56:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 22:56:17,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-28 22:56:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:17,710 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 22:56:17,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 22:56:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-28 22:56:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:56:17,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:17,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:17,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 22:56:17,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:17,918 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:56:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-28 22:56:17,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:17,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396614979] [2021-10-28 22:56:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:17,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:17,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:17,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:56:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:56:18,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:37,261 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from false [2021-10-28 22:56:39,327 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from true [2021-10-28 22:56:45,542 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-28 22:56:47,612 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-28 22:57:00,045 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-28 22:57:00,061 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 22:57:00,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:57:18,822 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from false [2021-10-28 22:57:20,889 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from true [2021-10-28 22:57:20,915 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 22:57:20,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:57:20,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396614979] [2021-10-28 22:57:20,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396614979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:57:20,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:57:20,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 22:57:20,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536889030] [2021-10-28 22:57:20,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:57:20,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:57:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:57:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-10-28 22:57:20,919 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 22:57:25,229 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from false [2021-10-28 22:57:27,299 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from true [2021-10-28 22:57:29,370 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-28 22:57:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:57:31,603 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-28 22:57:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:57:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 9 [2021-10-28 22:57:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:57:31,604 INFO L225 Difference]: With dead ends: 19 [2021-10-28 22:57:31,604 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 22:57:31,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-10-28 22:57:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 22:57:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 22:57:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 22:57:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-28 22:57:31,609 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-28 22:57:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:57:31,609 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-28 22:57:31,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 22:57:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-28 22:57:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:57:31,610 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:57:31,610 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 22:57:31,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:31,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:57:31,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:57:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:57:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-28 22:57:31,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:57:31,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032696910] [2021-10-28 22:57:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:31,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:57:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:57:31,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:57:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:57:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:57:41,541 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:57:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:57:59,456 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 22:57:59,456 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:57:59,458 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:57:59,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:57:59,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:59,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:57:59,664 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 22:57:59,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:57:59,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:57:59 BoogieIcfgContainer [2021-10-28 22:57:59,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:57:59,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:57:59,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:57:59,715 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:57:59,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:55" (3/4) ... [2021-10-28 22:57:59,718 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:57:59,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:57:59,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:57:59,789 INFO L168 Benchmark]: Toolchain (without parser) took 190397.27 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 38.5 MB in the beginning and 32.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,789 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:57:59,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.33 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 40.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 39.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:57:59,792 INFO L168 Benchmark]: Boogie Preprocessor took 30.05 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,792 INFO L168 Benchmark]: RCFGBuilder took 5543.57 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 28.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,793 INFO L168 Benchmark]: TraceAbstraction took 184357.94 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 27.6 MB in the beginning and 34.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,794 INFO L168 Benchmark]: Witness Printer took 72.61 ms. Allocated memory is still 83.9 MB. Free memory was 34.5 MB in the beginning and 32.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:59,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.33 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 40.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 39.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.05 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5543.57 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 28.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 184357.94 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 27.6 MB in the beginning and 34.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 72.61 ms. Allocated memory is still 83.9 MB. Free memory was 34.5 MB in the beginning and 32.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 184.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 7 SDslu, 74 SDs, 0 SdLazy, 14 SolverSat, 3 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 13.5s SatisfiabilityAnalysisTime, 116.9s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 470 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:58:00,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b50ddd-8793-49d2-9f23-b05838d4bb61/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...