./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY --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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:59:21,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:59:21,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:59:21,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:59:21,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:59:21,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:59:21,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:59:21,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:59:21,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:59:21,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:59:21,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:59:21,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:59:21,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:59:21,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:59:21,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:59:21,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:59:21,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:59:21,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:59:21,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:59:21,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:59:21,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:59:21,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:59:21,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:59:21,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:59:21,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:59:21,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:59:21,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:59:21,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:59:21,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:59:21,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:59:21,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:59:21,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:59:21,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:59:21,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:59:21,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:59:21,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:59:21,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:59:21,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:59:21,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:59:21,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:59:21,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:59:21,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:59:21,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:59:21,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:59:21,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:59:21,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:59:21,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:59:21,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:59:21,999 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:59:21,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:59:21,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:59:21,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:59:21,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:59:22,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:59:22,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:59:22,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:59:22,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:59:22,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:59:22,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:59:22,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:59:22,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:59:22,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:59:22,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:59:22,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:59:22,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:59:22,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:59:22,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:59:22,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:59:22,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:59:22,003 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-07 07:59:22,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:59:22,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:59:22,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:59:22,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:59:22,331 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:59:22,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 07:59:22,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/108c4a502/7832bc4f42b448438982e01b96b315e9/FLAGb6c9824dc [2021-11-07 07:59:23,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:59:23,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 07:59:23,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/108c4a502/7832bc4f42b448438982e01b96b315e9/FLAGb6c9824dc [2021-11-07 07:59:23,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/108c4a502/7832bc4f42b448438982e01b96b315e9 [2021-11-07 07:59:23,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:59:23,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:59:23,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:59:23,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:59:23,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:59:23,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:59:23" (1/1) ... [2021-11-07 07:59:23,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3275e6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:23, skipping insertion in model container [2021-11-07 07:59:23,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:59:23" (1/1) ... [2021-11-07 07:59:23,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:59:23,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:59:23,849 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-07 07:59:23,956 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-07 07:59:23,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:59:24,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:59:24,076 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-07 07:59:24,152 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-07 07:59:24,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:59:24,222 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:59:24,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24 WrapperNode [2021-11-07 07:59:24,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:59:24,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:59:24,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:59:24,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:59:24,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:59:24,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:59:24,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:59:24,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:59:24,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:59:24,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:59:24,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:59:24,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:59:24,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (1/1) ... [2021-11-07 07:59:24,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:59:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:24,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:59:24,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:59:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:59:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:59:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:59:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:59:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:59:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:59:26,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:59:26,065 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 07:59:26,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:59:26 BoogieIcfgContainer [2021-11-07 07:59:26,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:59:26,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:59:26,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:59:26,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:59:26,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:59:23" (1/3) ... [2021-11-07 07:59:26,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56719cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:59:26, skipping insertion in model container [2021-11-07 07:59:26,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:24" (2/3) ... [2021-11-07 07:59:26,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56719cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:59:26, skipping insertion in model container [2021-11-07 07:59:26,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:59:26" (3/3) ... [2021-11-07 07:59:26,078 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2021-11-07 07:59:26,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:59:26,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:59:26,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:59:26,141 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:59:26,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:59:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) [2021-11-07 07:59:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:59:26,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:26,168 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:26,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 07:59:26,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:26,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405930156] [2021-11-07 07:59:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:26,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:26,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:26,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405930156] [2021-11-07 07:59:26,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405930156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:26,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:26,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:59:26,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644757708] [2021-11-07 07:59:26,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:59:26,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:59:26,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:59:26,365 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-07 07:59:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:26,402 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 07:59:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:59:26,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 [2021-11-07 07:59:26,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:26,415 INFO L225 Difference]: With dead ends: 410 [2021-11-07 07:59:26,415 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 07:59:26,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:59:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 07:59:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 07:59:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 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) [2021-11-07 07:59:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 07:59:26,464 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 07:59:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:26,465 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 07:59:26,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-07 07:59:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 07:59:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:59:26,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:26,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:26,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:59:26,481 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 07:59:26,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:26,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686549691] [2021-11-07 07:59:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:26,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:26,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686549691] [2021-11-07 07:59:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686549691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:26,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:26,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:59:26,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201142623] [2021-11-07 07:59:26,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:59:26,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:59:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:59:26,602 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:26,990 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-07 07:59:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:59:26,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 07:59:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:26,994 INFO L225 Difference]: With dead ends: 377 [2021-11-07 07:59:26,995 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 07:59:26,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:59:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 07:59:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-07 07:59:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 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) [2021-11-07 07:59:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 07:59:27,013 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 07:59:27,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:27,013 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 07:59:27,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 07:59:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:27,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:27,018 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:27,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:59:27,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 07:59:27,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:27,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808625149] [2021-11-07 07:59:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:27,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:27,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:27,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339573467] [2021-11-07 07:59:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:27,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:27,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:27,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:59:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:27,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:59:27,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:27,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:27,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808625149] [2021-11-07 07:59:27,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:27,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339573467] [2021-11-07 07:59:27,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339573467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:27,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:27,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:59:27,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559917472] [2021-11-07 07:59:27,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:59:27,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:59:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:27,636 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:27,711 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-07 07:59:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:59:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 07:59:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:27,716 INFO L225 Difference]: With dead ends: 367 [2021-11-07 07:59:27,716 INFO L226 Difference]: Without dead ends: 196 [2021-11-07 07:59:27,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-07 07:59:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-07 07:59:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.306878306878307) internal successors, (247), 194 states have internal predecessors, (247), 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) [2021-11-07 07:59:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-07 07:59:27,750 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-07 07:59:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:27,751 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-07 07:59:27,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-07 07:59:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:27,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:27,760 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:27,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:27,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:27,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-07 07:59:27,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:27,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648250552] [2021-11-07 07:59:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:27,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:28,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:28,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383069903] [2021-11-07 07:59:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:28,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:28,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:59:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:59:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:59:28,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648250552] [2021-11-07 07:59:28,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383069903] [2021-11-07 07:59:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383069903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:28,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:28,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:59:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068408894] [2021-11-07 07:59:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:59:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:59:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:28,431 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 07:59:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:28,513 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-07 07:59:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:59:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-11-07 07:59:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:28,516 INFO L225 Difference]: With dead ends: 298 [2021-11-07 07:59:28,516 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 07:59:28,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 07:59:28,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-07 07:59:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.277511961722488) internal successors, (267), 214 states have internal predecessors, (267), 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) [2021-11-07 07:59:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-07 07:59:28,525 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-07 07:59:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:28,526 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-07 07:59:28,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 07:59:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-07 07:59:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:28,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:28,529 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:28,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:28,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:28,754 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-07 07:59:28,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:28,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451284327] [2021-11-07 07:59:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:28,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:28,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:28,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596535412] [2021-11-07 07:59:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:28,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:28,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:28,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:59:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:29,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:59:29,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:29,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:29,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451284327] [2021-11-07 07:59:29,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:29,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596535412] [2021-11-07 07:59:29,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596535412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:29,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:29,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:59:29,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116589423] [2021-11-07 07:59:29,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:59:29,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:59:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:59:29,269 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:29,351 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-07 07:59:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:59:29,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 07:59:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:29,360 INFO L225 Difference]: With dead ends: 418 [2021-11-07 07:59:29,360 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 07:59:29,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:59:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 07:59:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-07 07:59:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 200 states have internal predecessors, (246), 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) [2021-11-07 07:59:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-07 07:59:29,370 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-07 07:59:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:29,370 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-07 07:59:29,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-07 07:59:29,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:29,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:29,381 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:29,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:29,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:29,594 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-07 07:59:29,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:29,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877427974] [2021-11-07 07:59:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:29,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:29,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:29,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346129589] [2021-11-07 07:59:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:29,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:29,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:29,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:59:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:29,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:59:29,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:59:30,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:30,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877427974] [2021-11-07 07:59:30,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:30,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346129589] [2021-11-07 07:59:30,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346129589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:30,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:30,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:59:30,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79590559] [2021-11-07 07:59:30,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:59:30,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:59:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:59:30,122 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-07 07:59:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:30,203 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-07 07:59:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:59:30,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 96 [2021-11-07 07:59:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:30,206 INFO L225 Difference]: With dead ends: 295 [2021-11-07 07:59:30,206 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 07:59:30,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:59:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 07:59:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-07 07:59:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 186 states have internal predecessors, (225), 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) [2021-11-07 07:59:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-07 07:59:30,222 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-07 07:59:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:30,223 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-07 07:59:30,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-07 07:59:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-07 07:59:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:30,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:30,225 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:30,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:30,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:30,426 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:30,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-07 07:59:30,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:30,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652760840] [2021-11-07 07:59:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:30,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:30,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:30,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925203757] [2021-11-07 07:59:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:30,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:30,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:59:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:30,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:59:30,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:31,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:31,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652760840] [2021-11-07 07:59:31,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:31,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925203757] [2021-11-07 07:59:31,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925203757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:31,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:31,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:59:31,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502275797] [2021-11-07 07:59:31,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:59:31,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:59:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:31,125 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:31,184 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-07 07:59:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:59:31,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 07:59:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:31,187 INFO L225 Difference]: With dead ends: 486 [2021-11-07 07:59:31,187 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 07:59:31,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:59:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 07:59:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-07 07:59:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 290 states have internal predecessors, (350), 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) [2021-11-07 07:59:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-07 07:59:31,202 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-07 07:59:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:31,203 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-07 07:59:31,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-07 07:59:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 07:59:31,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:31,205 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:31,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:31,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 07:59:31,418 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-07 07:59:31,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:31,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463681246] [2021-11-07 07:59:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:31,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:31,436 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:31,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297239081] [2021-11-07 07:59:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:31,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:31,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:31,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:31,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:59:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:31,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:59:31,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:32,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:32,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463681246] [2021-11-07 07:59:32,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:32,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297239081] [2021-11-07 07:59:32,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297239081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:32,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:32,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:59:32,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561872009] [2021-11-07 07:59:32,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:59:32,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:59:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:59:32,171 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-11-07 07:59:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:32,867 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2021-11-07 07:59:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:59:32,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-11-07 07:59:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:32,871 INFO L225 Difference]: With dead ends: 474 [2021-11-07 07:59:32,871 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 07:59:32,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:59:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 07:59:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-07 07:59:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.208888888888889) internal successors, (272), 230 states have internal predecessors, (272), 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) [2021-11-07 07:59:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2021-11-07 07:59:32,882 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 103 [2021-11-07 07:59:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:32,882 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2021-11-07 07:59:32,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-11-07 07:59:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2021-11-07 07:59:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 07:59:32,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:32,885 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:32,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:33,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:59:33,098 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash 541560378, now seen corresponding path program 1 times [2021-11-07 07:59:33,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:33,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344768588] [2021-11-07 07:59:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:33,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:33,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:59:33,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320705820] [2021-11-07 07:59:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:33,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:33,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:33,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:33,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:59:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:33,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 07:59:33,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:33,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 07:59:33,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:59:33,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:33,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 07:59:33,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:33,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-07 07:59:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-07 07:59:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-11-07 07:59:35,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 66 [2021-11-07 07:59:35,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-07 07:59:35,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 07:59:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-07 07:59:35,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-07 07:59:35,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:35,261 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-07 07:59:35,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 07:59:37,167 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-07 07:59:37,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2845 treesize of output 2294 [2021-11-07 07:59:37,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:37,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:37,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:37,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:59:43,440 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 354 DAG size of output: 88 [2021-11-07 07:59:43,442 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-07 07:59:43,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3314 treesize of output 1805 [2021-11-07 07:59:43,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344768588] [2021-11-07 07:59:43,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:59:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320705820] [2021-11-07 07:59:43,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 07:59:43,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:43,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 07:59:43,561 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-07 07:59:43,561 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 07:59:43,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,572 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,572 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:59:43,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:43,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:43,781 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:43,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:59:43,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:59:43 BoogieIcfgContainer [2021-11-07 07:59:43,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:59:43,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:59:43,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:59:43,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:59:43,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:59:26" (3/4) ... [2021-11-07 07:59:43,829 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:59:43,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:59:43,830 INFO L168 Benchmark]: Toolchain (without parser) took 20509.12 ms. Allocated memory was 86.0 MB in the beginning and 161.5 MB in the end (delta: 75.5 MB). Free memory was 44.8 MB in the beginning and 42.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,831 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:59:43,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 900.68 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 51.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.79 ms. Allocated memory is still 104.9 MB. Free memory was 51.1 MB in the beginning and 44.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,832 INFO L168 Benchmark]: Boogie Preprocessor took 151.34 ms. Allocated memory is still 104.9 MB. Free memory was 44.3 MB in the beginning and 36.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,832 INFO L168 Benchmark]: RCFGBuilder took 1534.93 ms. Allocated memory is still 104.9 MB. Free memory was 36.8 MB in the beginning and 57.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,833 INFO L168 Benchmark]: TraceAbstraction took 17755.66 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 56.9 MB in the beginning and 43.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:59:43,833 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 161.5 MB. Free memory was 43.3 MB in the beginning and 42.4 MB in the end (delta: 913.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:59:43,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 900.68 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 51.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 155.79 ms. Allocated memory is still 104.9 MB. Free memory was 51.1 MB in the beginning and 44.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 151.34 ms. Allocated memory is still 104.9 MB. Free memory was 44.3 MB in the beginning and 36.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1534.93 ms. Allocated memory is still 104.9 MB. Free memory was 36.8 MB in the beginning and 57.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17755.66 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 56.9 MB in the beginning and 43.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.78 ms. Allocated memory is still 161.5 MB. Free memory was 43.3 MB in the beginning and 42.4 MB in the end (delta: 913.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 828]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 824, overapproximation of bitwiseAnd at line 824. Possible FailurePath: [L785] int count_int_int = 0; [L812] int i; [L813] example_user_t *user, *tmp, *users=((void *)0); [L814] i=0 [L814] EXPR \read(i) [L814] COND TRUE i<10 [L815] user = (example_user_t*)malloc(sizeof(example_user_t)) [L816] COND FALSE !(user == ((void *)0)) [L819] EXPR \read(i) [L819] user->id = i [L820] EXPR \read(i) [L820] EXPR \read(i) [L820] user->cookie = i*i [L821] unsigned _ha_hashv; [L821] unsigned _hj_i,_hj_j,_hj_k; [L821] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L821] _ha_hashv = 0xfeedbeefu [L821] EXPR _hj_j = 0x9e3779b9u [L821] _hj_i = _hj_j = 0x9e3779b9u [L821] _hj_k = (unsigned)(sizeof(int)) [L821] COND FALSE !(_hj_k >= 12U) [L821] _ha_hashv += (unsigned)(sizeof(int)) [L821] case 11: [L821] case 10: [L821] case 9: [L821] case 8: [L821] case 7: [L821] case 6: [L821] case 5: [L821] case 4: [L821] EXPR _hj_key[3] [L821] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L821] case 3: [L821] EXPR _hj_key[2] [L821] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L821] case 2: [L821] EXPR _hj_key[1] [L821] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L821] case 1: [L821] EXPR _hj_key[0] [L821] _hj_i += _hj_key[0] [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 13 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 8 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 13 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 12 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 16 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 5 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 3 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 10 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 15 ) [L821] (user)->hh.hashv = (_ha_hashv) [L821] (user)->hh.key = (char*) (&((user)->id)) [L821] (user)->hh.keylen = (unsigned) (sizeof(int)) [L821] COND TRUE !(users) [L821] (user)->hh.next = ((void *)0) [L821] (user)->hh.prev = ((void *)0) [L821] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L821] EXPR (user)->hh.tbl [L821] COND FALSE !(!(user)->hh.tbl) [L821] (user)->hh.tbl [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->tail = &((user)->hh) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->num_buckets = 32U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->log2_num_buckets = 5U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->signature = 0xa0111fe1u [L821] EXPR (user)->hh.tbl [L821] EXPR (user)->hh.tbl->buckets [L821] COND FALSE !(!(user)->hh.tbl->buckets) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets [L821] (users) = (user) [L821] unsigned _ha_bkt; [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_items [L821] (users)->hh.tbl->num_items++ [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_buckets [L821] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->buckets [L821] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L821] EXPR _ha_head->count [L821] _ha_head->count++ [L821] EXPR _ha_head->hh_head [L821] (&(user)->hh)->hh_next = _ha_head->hh_head [L821] (&(user)->hh)->hh_prev = ((void *)0) [L821] EXPR _ha_head->hh_head [L821] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L821] _ha_head->hh_head = (&(user)->hh) [L821] EXPR _ha_head->count [L821] EXPR _ha_head->expand_mult [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] EXPR (&(user)->hh)->tbl [L821] EXPR (&(user)->hh)->tbl->noexpand [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L814] EXPR \read(i) [L814] i++ [L814] EXPR \read(i) [L814] COND FALSE !(i<10) [L823] i=0 [L823] EXPR \read(i) [L823] COND TRUE i<10 [L824] unsigned _hf_hashv; [L824] unsigned _hj_i,_hj_j,_hj_k; [L824] unsigned const char *_hj_key=(unsigned const char*)(&i); [L824] _hf_hashv = 0xfeedbeefu [L824] EXPR _hj_j = 0x9e3779b9u [L824] _hj_i = _hj_j = 0x9e3779b9u [L824] _hj_k = (unsigned)(sizeof(int)) [L824] COND FALSE !(_hj_k >= 12U) [L824] _hf_hashv += (unsigned)(sizeof(int)) [L824] case 11: [L824] case 10: [L824] case 9: [L824] case 8: [L824] case 7: [L824] case 6: [L824] case 5: [L824] case 4: [L824] EXPR _hj_key[3] [L824] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L824] case 3: [L824] EXPR _hj_key[2] [L824] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L824] case 2: [L824] EXPR _hj_key[1] [L824] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L824] case 1: [L824] EXPR _hj_key[0] [L824] _hj_i += _hj_key[0] [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 13 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 8 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 13 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 12 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 16 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 5 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 3 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 10 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 15 ) [L824] (tmp) = ((void *)0) [L824] COND TRUE \read(*users) [L824] unsigned _hf_bkt; [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->num_buckets [L824] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->buckets [L824] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L824] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L824] (tmp) = ((void *)0) [L824] COND FALSE !((tmp) != ((void *)0)) [L825] COND FALSE !(tmp != ((void *)0)) [L828] reach_error() - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: 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, 206 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 17.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1738 SDtfs, 884 SDslu, 1464 SDs, 0 SdLazy, 370 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 1153 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2038 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 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 [2021-11-07 07:59:43,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY --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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:59:46,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:59:46,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:59:46,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:59:46,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:59:46,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:59:46,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:59:46,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:59:46,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:59:46,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:59:46,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:59:46,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:59:46,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:59:46,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:59:46,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:59:46,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:59:46,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:59:46,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:59:46,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:59:46,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:59:46,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:59:46,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:59:46,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:59:46,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:59:46,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:59:46,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:59:46,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:59:46,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:59:46,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:59:46,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:59:46,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:59:46,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:59:46,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:59:46,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:59:46,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:59:46,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:59:46,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:59:46,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:59:46,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:59:46,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:59:46,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:59:46,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 07:59:46,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:59:46,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:59:46,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:59:46,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:59:46,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:59:46,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:59:46,604 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:59:46,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:59:46,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:59:46,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:59:46,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:59:46,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:59:46,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:59:46,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:59:46,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:59:46,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:59:46,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:59:46,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:59:46,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:59:46,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:59:46,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:59:46,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:59:46,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:59:46,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:59:46,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:59:46,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:59:46,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:59:46,612 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:59:46,612 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:59:46,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:59:46,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:59:46,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:59:46,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:59:46,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:59:46,614 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-07 07:59:47,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:59:47,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:59:47,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:59:47,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:59:47,064 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:59:47,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 07:59:47,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/3a3573a80/41c493e340af412babe252391089538b/FLAGf12e94677 [2021-11-07 07:59:47,830 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:59:47,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 07:59:47,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/3a3573a80/41c493e340af412babe252391089538b/FLAGf12e94677 [2021-11-07 07:59:48,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/data/3a3573a80/41c493e340af412babe252391089538b [2021-11-07 07:59:48,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:59:48,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:59:48,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:59:48,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:59:48,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:59:48,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:59:48" (1/1) ... [2021-11-07 07:59:48,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bba217a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:48, skipping insertion in model container [2021-11-07 07:59:48,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:59:48" (1/1) ... [2021-11-07 07:59:48,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:59:48,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:59:48,728 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-07 07:59:48,844 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-07 07:59:48,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:59:48,871 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:59:48,907 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-07 07:59:49,024 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_6de959c7-77f8-4489-bb00-49ebe5ba64cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-07 07:59:49,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:59:49,123 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:59:49,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49 WrapperNode [2021-11-07 07:59:49,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:59:49,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:59:49,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:59:49,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:59:49,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:59:49,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:59:49,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:59:49,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:59:49,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:59:49,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:59:49,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:59:49,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:59:49,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (1/1) ... [2021-11-07 07:59:49,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:59:49,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:49,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:59:49,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:59:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:59:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:59:54,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:59:54,246 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 07:59:54,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:59:54 BoogieIcfgContainer [2021-11-07 07:59:54,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:59:54,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:59:54,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:59:54,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:59:54,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:59:48" (1/3) ... [2021-11-07 07:59:54,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73355eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:59:54, skipping insertion in model container [2021-11-07 07:59:54,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:59:49" (2/3) ... [2021-11-07 07:59:54,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73355eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:59:54, skipping insertion in model container [2021-11-07 07:59:54,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:59:54" (3/3) ... [2021-11-07 07:59:54,259 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2021-11-07 07:59:54,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:59:54,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:59:54,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:59:54,332 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:59:54,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:59:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) [2021-11-07 07:59:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:59:54,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:54,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:54,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 07:59:54,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:59:54,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557783806] [2021-11-07 07:59:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:54,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:59:54,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:59:54,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:59:54,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:59:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:54,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 07:59:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:54,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:59:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:54,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:59:54,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557783806] [2021-11-07 07:59:54,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557783806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:54,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:54,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:59:54,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420991870] [2021-11-07 07:59:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:59:54,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:59:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:59:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:59:54,739 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-07 07:59:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:54,809 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 07:59:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:59:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 [2021-11-07 07:59:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:54,830 INFO L225 Difference]: With dead ends: 410 [2021-11-07 07:59:54,830 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 07:59:54,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:59:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 07:59:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 07:59:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 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) [2021-11-07 07:59:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 07:59:54,901 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 07:59:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:54,902 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 07:59:54,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-07 07:59:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 07:59:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:59:54,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:54,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:54,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:55,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:59:55,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 07:59:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:59:55,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196513658] [2021-11-07 07:59:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:55,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:59:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:59:55,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:59:55,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:59:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:55,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:59:55,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:55,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 07:59:55,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 07:59:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:55,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:59:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:55,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:59:55,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196513658] [2021-11-07 07:59:55,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196513658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:59:55,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:59:55,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:59:55,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834782950] [2021-11-07 07:59:55,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:59:55,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:59:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:59:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:59:55,907 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:59,531 INFO L93 Difference]: Finished difference Result 459 states and 596 transitions. [2021-11-07 07:59:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:59:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 07:59:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:59,554 INFO L225 Difference]: With dead ends: 459 [2021-11-07 07:59:59,555 INFO L226 Difference]: Without dead ends: 376 [2021-11-07 07:59:59,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:59:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-07 07:59:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 175. [2021-11-07 07:59:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 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) [2021-11-07 07:59:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 07:59:59,575 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 07:59:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:59,576 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 07:59:59,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 07:59:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:59:59,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:59,582 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:59,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:59:59,796 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:59:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 07:59:59,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:59:59,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233767552] [2021-11-07 07:59:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:59,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:59:59,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:59:59,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:59:59,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:00:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:00:00,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:00,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:00,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233767552] [2021-11-07 08:00:00,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233767552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:00,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:00,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:00:00,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632186479] [2021-11-07 08:00:00,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:00:00,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:00:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:00:00,879 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-07 08:00:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:01,036 INFO L93 Difference]: Finished difference Result 355 states and 462 transitions. [2021-11-07 08:00:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:00:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 96 [2021-11-07 08:00:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:01,039 INFO L225 Difference]: With dead ends: 355 [2021-11-07 08:00:01,039 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 08:00:01,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:00:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 08:00:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2021-11-07 08:00:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.2906976744186047) internal successors, (222), 177 states have internal predecessors, (222), 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) [2021-11-07 08:00:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2021-11-07 08:00:01,055 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 96 [2021-11-07 08:00:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:01,055 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2021-11-07 08:00:01,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-07 08:00:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2021-11-07 08:00:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 08:00:01,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:01,062 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:01,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 08:00:01,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:01,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash 890123355, now seen corresponding path program 1 times [2021-11-07 08:00:01,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:01,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976323179] [2021-11-07 08:00:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:01,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:01,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:01,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 08:00:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:01,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:00:01,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:02,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:02,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:02,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976323179] [2021-11-07 08:00:02,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976323179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:02,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:02,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 08:00:02,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424101941] [2021-11-07 08:00:02,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:00:02,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:00:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:00:02,811 INFO L87 Difference]: Start difference. First operand 178 states and 222 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:03,605 INFO L93 Difference]: Finished difference Result 459 states and 570 transitions. [2021-11-07 08:00:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:00:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 08:00:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:03,607 INFO L225 Difference]: With dead ends: 459 [2021-11-07 08:00:03,608 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 08:00:03,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:00:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 08:00:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2021-11-07 08:00:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2883895131086143) internal successors, (344), 272 states have internal predecessors, (344), 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) [2021-11-07 08:00:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2021-11-07 08:00:03,625 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 96 [2021-11-07 08:00:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:03,625 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2021-11-07 08:00:03,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2021-11-07 08:00:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:00:03,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:03,628 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:03,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:03,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:03,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2000987094, now seen corresponding path program 1 times [2021-11-07 08:00:03,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:03,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756271789] [2021-11-07 08:00:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:03,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:03,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:03,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:03,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 08:00:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:00:04,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:04,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:04,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:04,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756271789] [2021-11-07 08:00:04,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756271789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:04,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:04,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:00:04,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439477521] [2021-11-07 08:00:04,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:00:04,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:00:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:00:04,969 INFO L87 Difference]: Start difference. First operand 273 states and 344 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 08:00:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:05,056 INFO L93 Difference]: Finished difference Result 504 states and 645 transitions. [2021-11-07 08:00:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:00:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-07 08:00:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:05,060 INFO L225 Difference]: With dead ends: 504 [2021-11-07 08:00:05,060 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 08:00:05,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:00:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 08:00:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-07 08:00:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.2851851851851852) internal successors, (347), 275 states have internal predecessors, (347), 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) [2021-11-07 08:00:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 347 transitions. [2021-11-07 08:00:05,077 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 347 transitions. Word has length 103 [2021-11-07 08:00:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:05,078 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 347 transitions. [2021-11-07 08:00:05,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 08:00:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 347 transitions. [2021-11-07 08:00:05,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 08:00:05,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:05,080 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:05,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:05,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:05,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 416871670, now seen corresponding path program 1 times [2021-11-07 08:00:05,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:05,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028565689] [2021-11-07 08:00:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:05,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:05,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:05,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 08:00:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:00:05,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:00:06,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:00:06,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:06,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028565689] [2021-11-07 08:00:06,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028565689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:00:06,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:06,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 08:00:06,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983006225] [2021-11-07 08:00:06,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:00:06,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:00:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:00:06,507 INFO L87 Difference]: Start difference. First operand 276 states and 347 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2021-11-07 08:00:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:06,844 INFO L93 Difference]: Finished difference Result 513 states and 657 transitions. [2021-11-07 08:00:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:00:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 106 [2021-11-07 08:00:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:06,847 INFO L225 Difference]: With dead ends: 513 [2021-11-07 08:00:06,848 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 08:00:06,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:00:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 08:00:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-07 08:00:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.2789855072463767) internal successors, (353), 281 states have internal predecessors, (353), 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) [2021-11-07 08:00:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 353 transitions. [2021-11-07 08:00:06,860 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 353 transitions. Word has length 106 [2021-11-07 08:00:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 353 transitions. [2021-11-07 08:00:06,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2021-11-07 08:00:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 353 transitions. [2021-11-07 08:00:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:00:06,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:06,863 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:06,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:07,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:07,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1224332106, now seen corresponding path program 2 times [2021-11-07 08:00:07,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:07,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651144849] [2021-11-07 08:00:07,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:07,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:07,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:07,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:07,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 08:00:07,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:00:07,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:00:07,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 08:00:07,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 08:00:08,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:08,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651144849] [2021-11-07 08:00:08,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651144849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:08,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:08,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:00:08,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304335365] [2021-11-07 08:00:08,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:00:08,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:00:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:00:08,013 INFO L87 Difference]: Start difference. First operand 282 states and 353 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-07 08:00:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:08,173 INFO L93 Difference]: Finished difference Result 431 states and 555 transitions. [2021-11-07 08:00:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:00:08,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 112 [2021-11-07 08:00:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:08,180 INFO L225 Difference]: With dead ends: 431 [2021-11-07 08:00:08,180 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 08:00:08,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:00:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 08:00:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2021-11-07 08:00:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 287 states have internal predecessors, (343), 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) [2021-11-07 08:00:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 343 transitions. [2021-11-07 08:00:08,194 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 343 transitions. Word has length 112 [2021-11-07 08:00:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 343 transitions. [2021-11-07 08:00:08,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-07 08:00:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 343 transitions. [2021-11-07 08:00:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:00:08,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:08,197 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:08,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:08,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:08,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2125746730, now seen corresponding path program 1 times [2021-11-07 08:00:08,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:08,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912363085] [2021-11-07 08:00:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:08,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:08,415 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:08,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 08:00:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:08,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:00:08,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:00:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:00:10,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:10,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912363085] [2021-11-07 08:00:10,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912363085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:00:10,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:10,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 08:00:10,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292668063] [2021-11-07 08:00:10,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 08:00:10,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 08:00:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:00:10,117 INFO L87 Difference]: Start difference. First operand 288 states and 343 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2021-11-07 08:00:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:12,239 INFO L93 Difference]: Finished difference Result 543 states and 661 transitions. [2021-11-07 08:00:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:00:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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 112 [2021-11-07 08:00:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:12,242 INFO L225 Difference]: With dead ends: 543 [2021-11-07 08:00:12,243 INFO L226 Difference]: Without dead ends: 300 [2021-11-07 08:00:12,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:00:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-07 08:00:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-07 08:00:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 299 states have internal predecessors, (355), 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) [2021-11-07 08:00:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 355 transitions. [2021-11-07 08:00:12,259 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 355 transitions. Word has length 112 [2021-11-07 08:00:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:12,260 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 355 transitions. [2021-11-07 08:00:12,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2021-11-07 08:00:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 355 transitions. [2021-11-07 08:00:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 08:00:12,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:12,262 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:12,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:12,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:12,470 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1333207466, now seen corresponding path program 2 times [2021-11-07 08:00:12,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:12,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914004328] [2021-11-07 08:00:12,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:12,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:12,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:12,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 08:00:12,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:00:12,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:12,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:00:12,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 08:00:13,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 08:00:14,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:14,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914004328] [2021-11-07 08:00:14,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914004328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:14,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:14,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 08:00:14,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663248506] [2021-11-07 08:00:14,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:00:14,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:00:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:00:14,108 INFO L87 Difference]: Start difference. First operand 300 states and 355 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 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) [2021-11-07 08:00:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:14,251 INFO L93 Difference]: Finished difference Result 435 states and 521 transitions. [2021-11-07 08:00:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:00:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 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 124 [2021-11-07 08:00:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:14,255 INFO L225 Difference]: With dead ends: 435 [2021-11-07 08:00:14,255 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 08:00:14,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:00:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 08:00:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2021-11-07 08:00:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.1879432624113475) internal successors, (335), 287 states have internal predecessors, (335), 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) [2021-11-07 08:00:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 335 transitions. [2021-11-07 08:00:14,270 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 335 transitions. Word has length 124 [2021-11-07 08:00:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 335 transitions. [2021-11-07 08:00:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 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) [2021-11-07 08:00:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 335 transitions. [2021-11-07 08:00:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 08:00:14,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:14,274 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:14,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:14,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:14,491 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1075042028, now seen corresponding path program 1 times [2021-11-07 08:00:14,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:14,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613117926] [2021-11-07 08:00:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:14,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:14,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:14,494 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:14,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 08:00:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:00:15,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:00:16,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:00:17,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:17,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613117926] [2021-11-07 08:00:17,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613117926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:00:17,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:17,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 08:00:17,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019664150] [2021-11-07 08:00:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:00:17,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:00:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:00:17,799 INFO L87 Difference]: Start difference. First operand 288 states and 335 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2021-11-07 08:00:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:30,772 INFO L93 Difference]: Finished difference Result 555 states and 669 transitions. [2021-11-07 08:00:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:00:30,773 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 124 [2021-11-07 08:00:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:30,776 INFO L225 Difference]: With dead ends: 555 [2021-11-07 08:00:30,776 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 08:00:30,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:00:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 08:00:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-07 08:00:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.173202614379085) internal successors, (359), 311 states have internal predecessors, (359), 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) [2021-11-07 08:00:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 359 transitions. [2021-11-07 08:00:30,797 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 359 transitions. Word has length 124 [2021-11-07 08:00:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:30,798 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 359 transitions. [2021-11-07 08:00:30,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2021-11-07 08:00:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 359 transitions. [2021-11-07 08:00:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 08:00:30,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:30,801 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:30,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:31,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:00:31,014 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:00:31,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207020, now seen corresponding path program 2 times [2021-11-07 08:00:31,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:00:31,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194007020] [2021-11-07 08:00:31,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:31,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:00:31,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:00:31,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:00:31,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 08:00:31,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:00:31,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:31,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 08:00:31,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 08:00:33,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:00:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 08:00:38,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:00:38,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194007020] [2021-11-07 08:00:38,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194007020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:00:38,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:38,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-07 08:00:38,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213348279] [2021-11-07 08:00:38,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 08:00:38,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:00:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 08:00:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 08:00:38,276 INFO L87 Difference]: Start difference. First operand 312 states and 359 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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) [2021-11-07 08:02:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:11,505 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-11-07 08:02:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 08:02:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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 148 [2021-11-07 08:02:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:11,512 INFO L225 Difference]: With dead ends: 609 [2021-11-07 08:02:11,512 INFO L226 Difference]: Without dead ends: 342 [2021-11-07 08:02:11,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 08:02:11,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-07 08:02:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-07 08:02:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 336 states have (on average 1.1577380952380953) internal successors, (389), 341 states have internal predecessors, (389), 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) [2021-11-07 08:02:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 389 transitions. [2021-11-07 08:02:11,542 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 389 transitions. Word has length 148 [2021-11-07 08:02:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:11,543 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 389 transitions. [2021-11-07 08:02:11,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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) [2021-11-07 08:02:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 389 transitions. [2021-11-07 08:02:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 08:02:11,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:11,546 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:11,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:02:11,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:02:11,766 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:02:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843084, now seen corresponding path program 3 times [2021-11-07 08:02:11,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:02:11,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869059935] [2021-11-07 08:02:11,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:02:11,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:02:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:02:11,770 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:02:11,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 08:02:12,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 08:02:12,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:02:12,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:02:12,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-07 08:02:13,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:02:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-07 08:02:14,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:02:14,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869059935] [2021-11-07 08:02:14,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869059935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:02:14,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:02:14,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:02:14,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311324007] [2021-11-07 08:02:14,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:02:14,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:02:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:02:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:02:14,343 INFO L87 Difference]: Start difference. First operand 342 states and 389 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 08:02:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:17,420 INFO L93 Difference]: Finished difference Result 588 states and 667 transitions. [2021-11-07 08:02:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:02:17,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 178 [2021-11-07 08:02:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:17,424 INFO L225 Difference]: With dead ends: 588 [2021-11-07 08:02:17,424 INFO L226 Difference]: Without dead ends: 291 [2021-11-07 08:02:17,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:02:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-07 08:02:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-07 08:02:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 290 states have internal predecessors, (325), 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) [2021-11-07 08:02:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 325 transitions. [2021-11-07 08:02:17,450 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 325 transitions. Word has length 178 [2021-11-07 08:02:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:17,451 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 325 transitions. [2021-11-07 08:02:17,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 08:02:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 325 transitions. [2021-11-07 08:02:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 08:02:17,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:17,454 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:17,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:02:17,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:02:17,670 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:02:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1442706610, now seen corresponding path program 1 times [2021-11-07 08:02:17,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:02:17,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16417653] [2021-11-07 08:02:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:17,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:02:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:02:17,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:02:17,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 08:02:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 08:02:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:02:21,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:02:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:02:26,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:02:26,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16417653] [2021-11-07 08:02:26,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16417653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:02:26,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:02:26,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 08:02:26,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516077537] [2021-11-07 08:02:26,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 08:02:26,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:02:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 08:02:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 08:02:26,909 INFO L87 Difference]: Start difference. First operand 291 states and 325 transitions. Second operand has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 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) [2021-11-07 08:04:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:17,013 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2021-11-07 08:04:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 08:04:17,015 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 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 185 [2021-11-07 08:04:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:17,018 INFO L225 Difference]: With dead ends: 489 [2021-11-07 08:04:17,018 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 08:04:17,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 08:04:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 08:04:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-11-07 08:04:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.1257861635220126) internal successors, (358), 323 states have internal predecessors, (358), 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) [2021-11-07 08:04:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2021-11-07 08:04:17,062 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 185 [2021-11-07 08:04:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:17,062 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2021-11-07 08:04:17,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 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) [2021-11-07 08:04:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2021-11-07 08:04:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 08:04:17,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:17,066 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:17,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:17,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:04:17,285 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:04:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 670930938, now seen corresponding path program 2 times [2021-11-07 08:04:17,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:04:17,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090626518] [2021-11-07 08:04:17,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:17,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:04:17,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:04:17,288 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:04:17,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 08:04:19,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:04:19,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:19,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 08:04:19,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:04:25,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:04:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:04:44,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:04:44,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090626518] [2021-11-07 08:04:44,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090626518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:04:44,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:44,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-07 08:04:44,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538636357] [2021-11-07 08:04:44,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 08:04:44,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:04:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 08:04:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 08:04:44,582 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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) [2021-11-07 08:04:52,213 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 133 [2021-11-07 08:09:58,149 WARN L207 SmtUtils]: Spent 6.73 s on a formula simplification that was a NOOP. DAG size: 196 [2021-11-07 08:10:08,249 WARN L207 SmtUtils]: Spent 7.53 s on a formula simplification that was a NOOP. DAG size: 193 [2021-11-07 08:10:18,190 WARN L207 SmtUtils]: Spent 7.20 s on a formula simplification that was a NOOP. DAG size: 190 [2021-11-07 08:10:27,947 WARN L207 SmtUtils]: Spent 6.98 s on a formula simplification that was a NOOP. DAG size: 187 [2021-11-07 08:10:37,867 WARN L207 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 184 [2021-11-07 08:10:54,468 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 178 [2021-11-07 08:11:08,455 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification that was a NOOP. DAG size: 172 [2021-11-07 08:12:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:12:20,795 INFO L93 Difference]: Finished difference Result 555 states and 683 transitions. [2021-11-07 08:12:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 08:12:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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 218 [2021-11-07 08:12:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:12:20,798 INFO L225 Difference]: With dead ends: 555 [2021-11-07 08:12:20,798 INFO L226 Difference]: Without dead ends: 390 [2021-11-07 08:12:20,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 290.3s TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 08:12:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-07 08:12:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-07 08:12:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 384 states have (on average 1.1041666666666667) internal successors, (424), 389 states have internal predecessors, (424), 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) [2021-11-07 08:12:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 424 transitions. [2021-11-07 08:12:20,849 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 424 transitions. Word has length 218 [2021-11-07 08:12:20,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:12:20,849 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 424 transitions. [2021-11-07 08:12:20,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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) [2021-11-07 08:12:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 424 transitions. [2021-11-07 08:12:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 08:12:20,852 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:12:20,852 INFO L513 BasicCegarLoop]: trace histogram [130, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:12:20,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:12:21,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:12:21,073 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:12:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:12:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 249758330, now seen corresponding path program 3 times [2021-11-07 08:12:21,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:12:21,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305977941] [2021-11-07 08:12:21,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:12:21,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:12:21,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:12:21,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:12:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de959c7-77f8-4489-bb00-49ebe5ba64cf/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process