./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF --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 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:47:55,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:47:55,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:47:55,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:47:55,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:47:55,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:47:55,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:47:55,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:47:55,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:47:55,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:47:55,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:47:55,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:47:55,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:47:55,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:47:55,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:47:55,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:47:55,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:47:55,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:47:55,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:47:55,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:47:55,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:47:55,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:47:55,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:47:55,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:47:55,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:47:55,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:47:55,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:47:55,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:47:55,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:47:55,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:47:55,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:47:55,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:47:55,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:47:55,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:47:55,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:47:55,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:47:55,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:47:55,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:47:55,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:47:55,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:47:55,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:47:55,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:47:55,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:47:55,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:47:55,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:47:55,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:47:55,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:47:55,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:47:55,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:47:55,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:47:55,913 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:47:55,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:47:55,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:47:55,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:47:55,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:47:55,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:47:55,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:47:55,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:47:55,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:47:55,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:47:55,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:47:55,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:47:55,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:47:55,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:47:55,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:47:55,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:47:55,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:47:55,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:47:55,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:47:55,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:47:55,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:47:55,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:47:55,921 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:47:55,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:47:55,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:47:55,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:47:55,922 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_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2021-11-20 05:47:56,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:47:56,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:47:56,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:47:56,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:47:56,292 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:47:56,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2021-11-20 05:47:56,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/data/7f7f061cc/720b9d9d8dfe49cf907d714811c3d2fc/FLAGca49f589d [2021-11-20 05:47:57,106 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:47:57,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2021-11-20 05:47:57,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/data/7f7f061cc/720b9d9d8dfe49cf907d714811c3d2fc/FLAGca49f589d [2021-11-20 05:47:57,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/data/7f7f061cc/720b9d9d8dfe49cf907d714811c3d2fc [2021-11-20 05:47:57,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:47:57,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:47:57,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:57,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:47:57,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:47:57,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:57" (1/1) ... [2021-11-20 05:47:57,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa0f19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:57, skipping insertion in model container [2021-11-20 05:47:57,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:57" (1/1) ... [2021-11-20 05:47:57,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:47:57,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:47:57,690 WARN L230 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_bba587e4-9fbc-4b39-8414-608baeaaad2c/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2021-11-20 05:47:58,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:58,512 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:47:58,530 WARN L230 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_bba587e4-9fbc-4b39-8414-608baeaaad2c/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2021-11-20 05:47:58,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:58,951 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:47:58,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58 WrapperNode [2021-11-20 05:47:58,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:58,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:47:58,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:47:58,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:47:58,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,290 INFO L137 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8512 [2021-11-20 05:47:59,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:47:59,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:47:59,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:47:59,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:47:59,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:47:59,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:47:59,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:47:59,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:47:59,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (1/1) ... [2021-11-20 05:47:59,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:47:59,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:47:59,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:47:59,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:47:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-11-20 05:47:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-11-20 05:47:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-11-20 05:47:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-11-20 05:47:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:47:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-11-20 05:47:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-11-20 05:47:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-20 05:47:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-20 05:47:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-20 05:47:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-20 05:47:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-11-20 05:47:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-11-20 05:47:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-20 05:47:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-20 05:47:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-11-20 05:47:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-11-20 05:47:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-11-20 05:47:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-11-20 05:47:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-11-20 05:47:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-11-20 05:47:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:47:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-20 05:47:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-20 05:47:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-11-20 05:47:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-11-20 05:47:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-11-20 05:47:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-11-20 05:47:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-11-20 05:47:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-11-20 05:47:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-11-20 05:47:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-11-20 05:47:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-11-20 05:47:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-11-20 05:47:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-20 05:47:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-20 05:47:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:47:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-20 05:47:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-20 05:47:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-11-20 05:47:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-11-20 05:47:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-11-20 05:47:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-11-20 05:47:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-11-20 05:47:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-11-20 05:47:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-20 05:47:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-20 05:47:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-11-20 05:47:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-11-20 05:47:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-20 05:47:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-20 05:47:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-11-20 05:47:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-11-20 05:47:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-11-20 05:47:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-11-20 05:47:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-20 05:47:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-20 05:47:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-11-20 05:47:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-11-20 05:47:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-11-20 05:47:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-11-20 05:47:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-11-20 05:47:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-11-20 05:47:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-20 05:47:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-20 05:47:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-11-20 05:47:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-11-20 05:47:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-11-20 05:47:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-11-20 05:47:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-11-20 05:47:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-11-20 05:47:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-11-20 05:47:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-11-20 05:47:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-11-20 05:47:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-11-20 05:47:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-11-20 05:47:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-11-20 05:47:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-11-20 05:47:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-11-20 05:47:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-11-20 05:47:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-11-20 05:47:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-11-20 05:47:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-11-20 05:47:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-11-20 05:47:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-11-20 05:47:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-11-20 05:47:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-11-20 05:47:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-11-20 05:47:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-11-20 05:47:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:47:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-11-20 05:47:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-11-20 05:47:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:47:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:48:00,687 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:48:00,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:48:24,236 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:48:24,268 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:48:24,269 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 05:48:24,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:24 BoogieIcfgContainer [2021-11-20 05:48:24,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:48:24,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:48:24,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:48:24,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:48:24,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:47:57" (1/3) ... [2021-11-20 05:48:24,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f1ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:48:24, skipping insertion in model container [2021-11-20 05:48:24,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:58" (2/3) ... [2021-11-20 05:48:24,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f1ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:48:24, skipping insertion in model container [2021-11-20 05:48:24,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:24" (3/3) ... [2021-11-20 05:48:24,289 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2021-11-20 05:48:24,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:48:24,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:48:24,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:48:24,383 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 [2021-11-20 05:48:24,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:48:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 2469 states, 2115 states have (on average 1.4799054373522458) internal successors, (3130), 2139 states have internal predecessors, (3130), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2021-11-20 05:48:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-20 05:48:24,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:24,492 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:24,492 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:48:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1151272851, now seen corresponding path program 1 times [2021-11-20 05:48:24,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:48:24,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429998892] [2021-11-20 05:48:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:24,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:48:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:48:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:48:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:48:25,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:48:25,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429998892] [2021-11-20 05:48:25,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429998892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:25,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:25,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:48:25,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764297060] [2021-11-20 05:48:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:25,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:48:25,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:48:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:48:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:48:25,339 INFO L87 Difference]: Start difference. First operand has 2469 states, 2115 states have (on average 1.4799054373522458) internal successors, (3130), 2139 states have internal predecessors, (3130), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:48:26,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:48:28,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:48:30,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:48:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:35,671 INFO L93 Difference]: Finished difference Result 5692 states and 9395 transitions. [2021-11-20 05:48:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:48:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 148 [2021-11-20 05:48:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:35,776 INFO L225 Difference]: With dead ends: 5692 [2021-11-20 05:48:35,776 INFO L226 Difference]: Without dead ends: 3215 [2021-11-20 05:48:35,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:48:35,857 INFO L933 BasicCegarLoop]: 3131 mSDtfsCounter, 1684 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 5302 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:35,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 5302 Invalid, 2823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1220 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-20 05:48:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-11-20 05:48:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2456. [2021-11-20 05:48:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2103 states have (on average 1.1535901093675702) internal successors, (2426), 2127 states have internal predecessors, (2426), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (307), 297 states have call predecessors, (307), 307 states have call successors, (307) [2021-11-20 05:48:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3041 transitions. [2021-11-20 05:48:36,277 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3041 transitions. Word has length 148 [2021-11-20 05:48:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:36,278 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 3041 transitions. [2021-11-20 05:48:36,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:48:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3041 transitions. [2021-11-20 05:48:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-20 05:48:36,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:36,306 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:36,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:48:36,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:48:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1991090307, now seen corresponding path program 1 times [2021-11-20 05:48:36,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:48:36,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137199893] [2021-11-20 05:48:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:36,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:48:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:48:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:48:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:48:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 05:48:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:48:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:48:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 05:48:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:48:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:48:37,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:48:37,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137199893] [2021-11-20 05:48:37,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137199893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:37,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:37,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:48:37,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858000882] [2021-11-20 05:48:37,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:48:37,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:48:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:48:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:48:37,250 INFO L87 Difference]: Start difference. First operand 2456 states and 3041 transitions. Second operand has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:48:39,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:48:41,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:01,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:04,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:07,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:09,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:11,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:13,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:15,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:17,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:19,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:19,556 INFO L93 Difference]: Finished difference Result 6533 states and 8783 transitions. [2021-11-20 05:49:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:49:19,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 208 [2021-11-20 05:49:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:19,606 INFO L225 Difference]: With dead ends: 6533 [2021-11-20 05:49:19,607 INFO L226 Difference]: Without dead ends: 4082 [2021-11-20 05:49:19,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:49:19,646 INFO L933 BasicCegarLoop]: 3275 mSDtfsCounter, 8125 mSDsluCounter, 6267 mSDsCounter, 0 mSdLazyCounter, 7197 mSolverCounterSat, 3360 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8263 SdHoareTripleChecker+Valid, 9542 SdHoareTripleChecker+Invalid, 10568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3360 IncrementalHoareTripleChecker+Valid, 7197 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:19,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8263 Valid, 9542 Invalid, 10568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3360 Valid, 7197 Invalid, 11 Unknown, 0 Unchecked, 41.2s Time] [2021-11-20 05:49:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-20 05:49:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2979. [2021-11-20 05:49:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2478 states have (on average 1.1864406779661016) internal successors, (2940), 2508 states have internal predecessors, (2940), 423 states have call successors, (423), 77 states have call predecessors, (423), 77 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-20 05:49:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3785 transitions. [2021-11-20 05:49:19,966 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3785 transitions. Word has length 208 [2021-11-20 05:49:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:19,968 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 3785 transitions. [2021-11-20 05:49:19,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:49:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3785 transitions. [2021-11-20 05:49:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-20 05:49:19,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:19,978 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:19,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:49:19,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:49:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1578541691, now seen corresponding path program 1 times [2021-11-20 05:49:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:19,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124877689] [2021-11-20 05:49:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:19,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:49:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:49:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:49:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 05:49:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:49:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:49:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 05:49:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:49:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:49:20,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:20,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124877689] [2021-11-20 05:49:20,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124877689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:20,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:20,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:49:20,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908967140] [2021-11-20 05:49:20,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:20,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:49:20,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:49:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:49:20,520 INFO L87 Difference]: Start difference. First operand 2979 states and 3785 transitions. Second operand has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:49:21,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:24,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:25,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:27,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:46,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:48,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:50,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:53,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:55,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:57,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:59,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:01,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:50:01,356 INFO L93 Difference]: Finished difference Result 7690 states and 10507 transitions. [2021-11-20 05:50:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:50:01,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 209 [2021-11-20 05:50:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:50:01,400 INFO L225 Difference]: With dead ends: 7690 [2021-11-20 05:50:01,400 INFO L226 Difference]: Without dead ends: 4716 [2021-11-20 05:50:01,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:50:01,423 INFO L933 BasicCegarLoop]: 3068 mSDtfsCounter, 9448 mSDsluCounter, 6425 mSDsCounter, 0 mSdLazyCounter, 7841 mSolverCounterSat, 3548 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9606 SdHoareTripleChecker+Valid, 9493 SdHoareTripleChecker+Invalid, 11398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3548 IncrementalHoareTripleChecker+Valid, 7841 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:50:01,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9606 Valid, 9493 Invalid, 11398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3548 Valid, 7841 Invalid, 9 Unknown, 0 Unchecked, 40.0s Time] [2021-11-20 05:50:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2021-11-20 05:50:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 3353. [2021-11-20 05:50:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 2754 states have (on average 1.2058823529411764) internal successors, (3321), 2793 states have internal predecessors, (3321), 500 states have call successors, (500), 98 states have call predecessors, (500), 98 states have return successors, (499), 481 states have call predecessors, (499), 499 states have call successors, (499) [2021-11-20 05:50:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4320 transitions. [2021-11-20 05:50:01,669 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4320 transitions. Word has length 209 [2021-11-20 05:50:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:50:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 4320 transitions. [2021-11-20 05:50:01,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:50:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4320 transitions. [2021-11-20 05:50:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-20 05:50:01,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:50:01,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:50:01,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:50:01,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:50:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1060871128, now seen corresponding path program 1 times [2021-11-20 05:50:01,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272489593] [2021-11-20 05:50:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:01,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:50:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:50:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:50:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 05:50:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:50:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:50:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 05:50:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:50:02,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:50:02,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272489593] [2021-11-20 05:50:02,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272489593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:50:02,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:50:02,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:50:02,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407465834] [2021-11-20 05:50:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:50:02,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:50:02,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:50:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:50:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:50:02,537 INFO L87 Difference]: Start difference. First operand 3353 states and 4320 transitions. Second operand has 12 states, 11 states have (on average 16.545454545454547) internal successors, (182), 9 states have internal predecessors, (182), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 05:50:04,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:06,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:37,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:39,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:41,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:43,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:45,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:47,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:49,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:50:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:50:49,689 INFO L93 Difference]: Finished difference Result 9870 states and 13763 transitions. [2021-11-20 05:50:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 05:50:49,690 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 16.545454545454547) internal successors, (182), 9 states have internal predecessors, (182), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 205 [2021-11-20 05:50:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:50:49,753 INFO L225 Difference]: With dead ends: 9870 [2021-11-20 05:50:49,754 INFO L226 Difference]: Without dead ends: 6522 [2021-11-20 05:50:49,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:50:49,780 INFO L933 BasicCegarLoop]: 3596 mSDtfsCounter, 8781 mSDsluCounter, 12200 mSDsCounter, 0 mSdLazyCounter, 9757 mSolverCounterSat, 3987 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8917 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 13753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3987 IncrementalHoareTripleChecker+Valid, 9757 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:50:49,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8917 Valid, 15796 Invalid, 13753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3987 Valid, 9757 Invalid, 9 Unknown, 0 Unchecked, 45.8s Time] [2021-11-20 05:50:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2021-11-20 05:50:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 4319. [2021-11-20 05:50:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4319 states, 3451 states have (on average 1.2407997681831353) internal successors, (4282), 3507 states have internal predecessors, (4282), 720 states have call successors, (720), 146 states have call predecessors, (720), 147 states have return successors, (720), 695 states have call predecessors, (720), 719 states have call successors, (720) [2021-11-20 05:50:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5722 transitions. [2021-11-20 05:50:50,191 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5722 transitions. Word has length 205 [2021-11-20 05:50:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:50:50,194 INFO L470 AbstractCegarLoop]: Abstraction has 4319 states and 5722 transitions. [2021-11-20 05:50:50,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 16.545454545454547) internal successors, (182), 9 states have internal predecessors, (182), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 05:50:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5722 transitions. [2021-11-20 05:50:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-20 05:50:50,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:50:50,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:50:50,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:50:50,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:50:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1896634989, now seen corresponding path program 1 times [2021-11-20 05:50:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:50,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777618323] [2021-11-20 05:50:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:50,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:50:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:50:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:50:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 05:50:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:50:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:50:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:50:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:50:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:50:50,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:50:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777618323] [2021-11-20 05:50:50,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777618323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:50:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483323335] [2021-11-20 05:50:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:50,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:50:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:50:50,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:50:50,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:50:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:51,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:50:51,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:50:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 05:50:52,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:50:52,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483323335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:50:52,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:50:52,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-20 05:50:52,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833995464] [2021-11-20 05:50:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:50:52,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:50:52,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:50:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:50:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:50:52,595 INFO L87 Difference]: Start difference. First operand 4319 states and 5722 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:50:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:50:57,964 INFO L93 Difference]: Finished difference Result 8870 states and 11733 transitions. [2021-11-20 05:50:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:50:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 208 [2021-11-20 05:50:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:50:58,006 INFO L225 Difference]: With dead ends: 8870 [2021-11-20 05:50:58,006 INFO L226 Difference]: Without dead ends: 4442 [2021-11-20 05:50:58,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:50:58,040 INFO L933 BasicCegarLoop]: 3602 mSDtfsCounter, 1466 mSDsluCounter, 8426 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 12028 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:50:58,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 12028 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 05:50:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2021-11-20 05:50:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4306. [2021-11-20 05:50:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 3443 states have (on average 1.2396166134185302) internal successors, (4268), 3499 states have internal predecessors, (4268), 715 states have call successors, (715), 146 states have call predecessors, (715), 147 states have return successors, (715), 690 states have call predecessors, (715), 714 states have call successors, (715) [2021-11-20 05:50:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 5698 transitions. [2021-11-20 05:50:58,317 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 5698 transitions. Word has length 208 [2021-11-20 05:50:58,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:50:58,318 INFO L470 AbstractCegarLoop]: Abstraction has 4306 states and 5698 transitions. [2021-11-20 05:50:58,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:50:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 5698 transitions. [2021-11-20 05:50:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-20 05:50:58,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:50:58,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:50:58,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:50:58,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:50:58,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:50:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1307616805, now seen corresponding path program 1 times [2021-11-20 05:50:58,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:58,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334929568] [2021-11-20 05:50:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:58,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:50:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:50:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:50:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:50:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 05:50:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 05:50:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 05:50:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 05:50:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:50:59,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:50:59,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334929568] [2021-11-20 05:50:59,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334929568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:50:59,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71166091] [2021-11-20 05:50:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:59,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:50:59,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:50:59,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:50:59,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:51:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:00,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 05:51:00,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:51:00,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71166091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:00,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:00,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-20 05:51:00,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915726949] [2021-11-20 05:51:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:00,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:00,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:51:00,890 INFO L87 Difference]: Start difference. First operand 4306 states and 5698 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:05,087 INFO L93 Difference]: Finished difference Result 8801 states and 11628 transitions. [2021-11-20 05:51:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 209 [2021-11-20 05:51:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:05,150 INFO L225 Difference]: With dead ends: 8801 [2021-11-20 05:51:05,152 INFO L226 Difference]: Without dead ends: 4434 [2021-11-20 05:51:05,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:05,187 INFO L933 BasicCegarLoop]: 3588 mSDtfsCounter, 1206 mSDsluCounter, 8738 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:05,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 12326 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 05:51:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2021-11-20 05:51:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4296. [2021-11-20 05:51:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 3437 states have (on average 1.238580157113762) internal successors, (4257), 3493 states have internal predecessors, (4257), 711 states have call successors, (711), 146 states have call predecessors, (711), 147 states have return successors, (711), 686 states have call predecessors, (711), 710 states have call successors, (711) [2021-11-20 05:51:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 5679 transitions. [2021-11-20 05:51:05,507 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 5679 transitions. Word has length 209 [2021-11-20 05:51:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:05,508 INFO L470 AbstractCegarLoop]: Abstraction has 4296 states and 5679 transitions. [2021-11-20 05:51:05,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 5679 transitions. [2021-11-20 05:51:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 05:51:05,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:05,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:05,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:05,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:05,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:51:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash -967191227, now seen corresponding path program 1 times [2021-11-20 05:51:05,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:05,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379937584] [2021-11-20 05:51:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:05,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:51:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:51:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:51:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 05:51:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:51:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 05:51:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 05:51:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:51:06,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:06,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379937584] [2021-11-20 05:51:06,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379937584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:06,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392480375] [2021-11-20 05:51:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:06,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:06,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:06,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:06,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:51:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:07,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:07,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:51:08,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:51:08,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392480375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:08,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:08,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-20 05:51:08,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638453971] [2021-11-20 05:51:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:08,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:08,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:51:08,021 INFO L87 Difference]: Start difference. First operand 4296 states and 5679 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:13,612 INFO L93 Difference]: Finished difference Result 8796 states and 11528 transitions. [2021-11-20 05:51:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 210 [2021-11-20 05:51:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:13,643 INFO L225 Difference]: With dead ends: 8796 [2021-11-20 05:51:13,643 INFO L226 Difference]: Without dead ends: 4505 [2021-11-20 05:51:13,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:13,661 INFO L933 BasicCegarLoop]: 3827 mSDtfsCounter, 1719 mSDsluCounter, 8992 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 12819 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:13,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 12819 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-20 05:51:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2021-11-20 05:51:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4176. [2021-11-20 05:51:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3357 states have (on average 1.2347333929103366) internal successors, (4145), 3413 states have internal predecessors, (4145), 676 states have call successors, (676), 141 states have call predecessors, (676), 142 states have return successors, (676), 651 states have call predecessors, (676), 675 states have call successors, (676) [2021-11-20 05:51:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5497 transitions. [2021-11-20 05:51:14,023 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5497 transitions. Word has length 210 [2021-11-20 05:51:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:14,024 INFO L470 AbstractCegarLoop]: Abstraction has 4176 states and 5497 transitions. [2021-11-20 05:51:14,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5497 transitions. [2021-11-20 05:51:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 05:51:14,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:14,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:14,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:14,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 05:51:14,267 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:51:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -64365446, now seen corresponding path program 1 times [2021-11-20 05:51:14,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:14,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379535559] [2021-11-20 05:51:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:14,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:51:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:51:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:51:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:51:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 05:51:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:51:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 05:51:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 05:51:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:51:14,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:14,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379535559] [2021-11-20 05:51:14,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379535559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:14,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793033073] [2021-11-20 05:51:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:14,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:14,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:14,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:51:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:15,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:51:16,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:51:16,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793033073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:16,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:16,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-20 05:51:16,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489536473] [2021-11-20 05:51:16,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:16,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:16,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:16,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:51:16,361 INFO L87 Difference]: Start difference. First operand 4176 states and 5497 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:21,019 INFO L93 Difference]: Finished difference Result 8349 states and 11000 transitions. [2021-11-20 05:51:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 210 [2021-11-20 05:51:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:21,045 INFO L225 Difference]: With dead ends: 8349 [2021-11-20 05:51:21,045 INFO L226 Difference]: Without dead ends: 4178 [2021-11-20 05:51:21,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:21,064 INFO L933 BasicCegarLoop]: 3041 mSDtfsCounter, 1037 mSDsluCounter, 7829 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 10870 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:21,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 10870 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 05:51:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-11-20 05:51:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4176. [2021-11-20 05:51:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3357 states have (on average 1.2344355078939528) internal successors, (4144), 3413 states have internal predecessors, (4144), 676 states have call successors, (676), 141 states have call predecessors, (676), 142 states have return successors, (676), 651 states have call predecessors, (676), 675 states have call successors, (676) [2021-11-20 05:51:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5496 transitions. [2021-11-20 05:51:21,306 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5496 transitions. Word has length 210 [2021-11-20 05:51:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 4176 states and 5496 transitions. [2021-11-20 05:51:21,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 05:51:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5496 transitions. [2021-11-20 05:51:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-20 05:51:21,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:21,318 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:21,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:21,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 05:51:21,539 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:51:21,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1816324685, now seen corresponding path program 1 times [2021-11-20 05:51:21,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:21,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869929974] [2021-11-20 05:51:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:21,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:51:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:51:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:51:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:51:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 05:51:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 05:51:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 05:51:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 05:51:22,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:22,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869929974] [2021-11-20 05:51:22,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869929974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:22,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:22,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:51:22,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077711621] [2021-11-20 05:51:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:22,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:51:22,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:51:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:51:22,190 INFO L87 Difference]: Start difference. First operand 4176 states and 5496 transitions. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 6 states have internal predecessors, (185), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 05:51:23,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:51:26,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:51:27,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:51:29,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:51:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:57,825 INFO L93 Difference]: Finished difference Result 9329 states and 12934 transitions. [2021-11-20 05:51:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:51:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 6 states have internal predecessors, (185), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 220 [2021-11-20 05:51:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:57,857 INFO L225 Difference]: With dead ends: 9329 [2021-11-20 05:51:57,858 INFO L226 Difference]: Without dead ends: 5158 [2021-11-20 05:51:57,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:51:57,878 INFO L933 BasicCegarLoop]: 3166 mSDtfsCounter, 11689 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 4895 mSolverCounterSat, 5356 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11848 SdHoareTripleChecker+Valid, 7483 SdHoareTripleChecker+Invalid, 10253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5356 IncrementalHoareTripleChecker+Valid, 4895 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:57,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11848 Valid, 7483 Invalid, 10253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5356 Valid, 4895 Invalid, 2 Unknown, 0 Unchecked, 34.7s Time] [2021-11-20 05:51:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-11-20 05:51:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 3694. [2021-11-20 05:51:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3010 states have (on average 1.217607973421927) internal successors, (3665), 3055 states have internal predecessors, (3665), 565 states have call successors, (565), 118 states have call predecessors, (565), 118 states have return successors, (564), 544 states have call predecessors, (564), 564 states have call successors, (564) [2021-11-20 05:51:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4794 transitions. [2021-11-20 05:51:58,127 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4794 transitions. Word has length 220 [2021-11-20 05:51:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:58,128 INFO L470 AbstractCegarLoop]: Abstraction has 3694 states and 4794 transitions. [2021-11-20 05:51:58,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 6 states have internal predecessors, (185), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 05:51:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4794 transitions. [2021-11-20 05:51:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-20 05:51:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:58,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:58,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:51:58,136 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:51:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash -641114456, now seen corresponding path program 1 times [2021-11-20 05:51:58,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:58,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308835105] [2021-11-20 05:51:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:58,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:51:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:51:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:51:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:51:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:51:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 05:51:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 05:51:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 05:51:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:51:58,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:58,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308835105] [2021-11-20 05:51:58,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308835105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:58,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:58,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:51:58,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783113478] [2021-11-20 05:51:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:58,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:51:58,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:58,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:51:58,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:51:58,799 INFO L87 Difference]: Start difference. First operand 3694 states and 4794 transitions. Second operand has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 05:52:00,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:03,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:38,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:40,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:42,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:44,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:46,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:48,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:50,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:50,938 INFO L93 Difference]: Finished difference Result 8847 states and 12232 transitions. [2021-11-20 05:52:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:52:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 220 [2021-11-20 05:52:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:50,972 INFO L225 Difference]: With dead ends: 8847 [2021-11-20 05:52:50,972 INFO L226 Difference]: Without dead ends: 5158 [2021-11-20 05:52:50,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:52:50,991 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 7583 mSDsluCounter, 6090 mSDsCounter, 0 mSdLazyCounter, 6674 mSolverCounterSat, 3138 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7748 SdHoareTripleChecker+Valid, 9206 SdHoareTripleChecker+Invalid, 9821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3138 IncrementalHoareTripleChecker+Valid, 6674 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:50,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7748 Valid, 9206 Invalid, 9821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3138 Valid, 6674 Invalid, 9 Unknown, 0 Unchecked, 51.1s Time] [2021-11-20 05:52:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-11-20 05:52:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 3694. [2021-11-20 05:52:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3010 states have (on average 1.2172757475083056) internal successors, (3664), 3055 states have internal predecessors, (3664), 565 states have call successors, (565), 118 states have call predecessors, (565), 118 states have return successors, (564), 544 states have call predecessors, (564), 564 states have call successors, (564) [2021-11-20 05:52:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4793 transitions. [2021-11-20 05:52:51,322 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4793 transitions. Word has length 220 [2021-11-20 05:52:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:51,323 INFO L470 AbstractCegarLoop]: Abstraction has 3694 states and 4793 transitions. [2021-11-20 05:52:51,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 05:52:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4793 transitions. [2021-11-20 05:52:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-20 05:52:51,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:51,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:51,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:52:51,333 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1724209539, now seen corresponding path program 1 times [2021-11-20 05:52:51,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769985078] [2021-11-20 05:52:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:51,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:52:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:52:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:52:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:52:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:52:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:52:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-20 05:52:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 05:52:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:52:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 05:52:52,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769985078] [2021-11-20 05:52:52,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769985078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380506838] [2021-11-20 05:52:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:52,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:52,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:52,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:52,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:52:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:52:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:53,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:52:53,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380506838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:53,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:52:53,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 05:52:53,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924136990] [2021-11-20 05:52:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:53,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:53,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:53,351 INFO L87 Difference]: Start difference. First operand 3694 states and 4793 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:52:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:56,858 INFO L93 Difference]: Finished difference Result 7517 states and 9739 transitions. [2021-11-20 05:52:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:52:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 223 [2021-11-20 05:52:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:56,923 INFO L225 Difference]: With dead ends: 7517 [2021-11-20 05:52:56,923 INFO L226 Difference]: Without dead ends: 3828 [2021-11-20 05:52:56,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:52:56,938 INFO L933 BasicCegarLoop]: 3145 mSDtfsCounter, 2405 mSDsluCounter, 5768 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 8913 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:56,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 8913 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 05:52:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2021-11-20 05:52:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3692. [2021-11-20 05:52:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3009 states have (on average 1.217015619807245) internal successors, (3662), 3054 states have internal predecessors, (3662), 564 states have call successors, (564), 118 states have call predecessors, (564), 118 states have return successors, (563), 543 states have call predecessors, (563), 563 states have call successors, (563) [2021-11-20 05:52:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4789 transitions. [2021-11-20 05:52:57,143 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4789 transitions. Word has length 223 [2021-11-20 05:52:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:57,144 INFO L470 AbstractCegarLoop]: Abstraction has 3692 states and 4789 transitions. [2021-11-20 05:52:57,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:52:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4789 transitions. [2021-11-20 05:52:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-20 05:52:57,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:57,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:57,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:57,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:57,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1684959842, now seen corresponding path program 1 times [2021-11-20 05:52:57,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:57,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034024733] [2021-11-20 05:52:57,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:57,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:52:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:52:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:52:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:52:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:52:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:52:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 05:52:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:52:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:52:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 05:52:58,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034024733] [2021-11-20 05:52:58,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034024733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237335203] [2021-11-20 05:52:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:58,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:58,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:58,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:58,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:52:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:58,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:59,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:52:59,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237335203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:59,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:52:59,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 05:52:59,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076055280] [2021-11-20 05:52:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:59,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:59,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:59,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:59,426 INFO L87 Difference]: Start difference. First operand 3692 states and 4789 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:53:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:02,188 INFO L93 Difference]: Finished difference Result 7514 states and 9732 transitions. [2021-11-20 05:53:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:02,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 224 [2021-11-20 05:53:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:02,206 INFO L225 Difference]: With dead ends: 7514 [2021-11-20 05:53:02,206 INFO L226 Difference]: Without dead ends: 3827 [2021-11-20 05:53:02,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:53:02,224 INFO L933 BasicCegarLoop]: 3010 mSDtfsCounter, 2526 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 7093 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:02,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2527 Valid, 7093 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 05:53:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-11-20 05:53:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3688. [2021-11-20 05:53:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3007 states have (on average 1.2164948453608246) internal successors, (3658), 3052 states have internal predecessors, (3658), 562 states have call successors, (562), 118 states have call predecessors, (562), 118 states have return successors, (561), 541 states have call predecessors, (561), 561 states have call successors, (561) [2021-11-20 05:53:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 4781 transitions. [2021-11-20 05:53:02,436 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 4781 transitions. Word has length 224 [2021-11-20 05:53:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:02,437 INFO L470 AbstractCegarLoop]: Abstraction has 3688 states and 4781 transitions. [2021-11-20 05:53:02,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:53:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 4781 transitions. [2021-11-20 05:53:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-20 05:53:02,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:02,444 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:02,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:02,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:02,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1335453189, now seen corresponding path program 1 times [2021-11-20 05:53:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:02,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452827470] [2021-11-20 05:53:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:02,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:53:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:53:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:53:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:53:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:53:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:53:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 05:53:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:53:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:53:03,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452827470] [2021-11-20 05:53:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452827470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287234054] [2021-11-20 05:53:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:03,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:03,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:03,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:03,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:53:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:03,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 05:53:04,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:04,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287234054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:04,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:04,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-11-20 05:53:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764649523] [2021-11-20 05:53:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:04,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:04,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:04,618 INFO L87 Difference]: Start difference. First operand 3688 states and 4781 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 05:53:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:11,918 INFO L93 Difference]: Finished difference Result 7371 states and 9565 transitions. [2021-11-20 05:53:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 225 [2021-11-20 05:53:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:11,939 INFO L225 Difference]: With dead ends: 7371 [2021-11-20 05:53:11,939 INFO L226 Difference]: Without dead ends: 3688 [2021-11-20 05:53:11,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:11,957 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 2542 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:11,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 7876 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 05:53:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2021-11-20 05:53:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3686. [2021-11-20 05:53:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3006 states have (on average 1.2162341982701264) internal successors, (3656), 3051 states have internal predecessors, (3656), 561 states have call successors, (561), 118 states have call predecessors, (561), 118 states have return successors, (560), 540 states have call predecessors, (560), 560 states have call successors, (560) [2021-11-20 05:53:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4777 transitions. [2021-11-20 05:53:12,174 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4777 transitions. Word has length 225 [2021-11-20 05:53:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 3686 states and 4777 transitions. [2021-11-20 05:53:12,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 05:53:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4777 transitions. [2021-11-20 05:53:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-20 05:53:12,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:12,182 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:12,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:12,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba587e4-9fbc-4b39-8414-608baeaaad2c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 05:53:12,403 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash 187825947, now seen corresponding path program 1 times [2021-11-20 05:53:12,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:12,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954677278] [2021-11-20 05:53:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:12,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:53:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:53:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:53:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:53:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:53:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:53:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:53:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 05:53:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:53:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:53:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:53:13,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954677278] [2021-11-20 05:53:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954677278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:13,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:53:13,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084340485] [2021-11-20 05:53:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:53:13,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:13,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:53:13,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:53:13,111 INFO L87 Difference]: Start difference. First operand 3686 states and 4777 transitions. Second operand has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:53:15,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:17,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:19,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:10,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:12,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:14,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:16,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:19,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:21,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:23,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:25,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:27,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:29,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:31,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:33,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:35,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:37,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:37,980 INFO L93 Difference]: Finished difference Result 8811 states and 12165 transitions. [2021-11-20 05:54:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:54:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 225 [2021-11-20 05:54:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:38,009 INFO L225 Difference]: With dead ends: 8811 [2021-11-20 05:54:38,009 INFO L226 Difference]: Without dead ends: 5130 [2021-11-20 05:54:38,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:54:38,088 INFO L933 BasicCegarLoop]: 3227 mSDtfsCounter, 5738 mSDsluCounter, 8829 mSDsCounter, 0 mSdLazyCounter, 10660 mSolverCounterSat, 1888 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5899 SdHoareTripleChecker+Valid, 12056 SdHoareTripleChecker+Invalid, 12565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1888 IncrementalHoareTripleChecker+Valid, 10660 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:38,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5899 Valid, 12056 Invalid, 12565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1888 Valid, 10660 Invalid, 17 Unknown, 0 Unchecked, 83.6s Time] [2021-11-20 05:54:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2021-11-20 05:54:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 3682. [2021-11-20 05:54:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3004 states have (on average 1.2157123834886818) internal successors, (3652), 3049 states have internal predecessors, (3652), 559 states have call successors, (559), 118 states have call predecessors, (559), 118 states have return successors, (558), 538 states have call predecessors, (558), 558 states have call successors, (558) [2021-11-20 05:54:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 4769 transitions. [2021-11-20 05:54:38,434 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 4769 transitions. Word has length 225 [2021-11-20 05:54:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:38,435 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 4769 transitions. [2021-11-20 05:54:38,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:54:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 4769 transitions. [2021-11-20 05:54:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-20 05:54:38,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:38,442 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:38,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:54:38,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash 104617357, now seen corresponding path program 1 times [2021-11-20 05:54:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877835918] [2021-11-20 05:54:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:38,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:54:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:38,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:54:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:54:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:54:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:54:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:54:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:54:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 05:54:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:54:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:54:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:54:39,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:39,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877835918] [2021-11-20 05:54:39,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877835918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:39,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:39,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:54:39,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020401582] [2021-11-20 05:54:39,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:39,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:54:39,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:54:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:54:39,569 INFO L87 Difference]: Start difference. First operand 3682 states and 4769 transitions. Second operand has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 6 states have internal predecessors, (187), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 05:54:41,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:31,100 INFO L93 Difference]: Finished difference Result 8806 states and 12151 transitions. [2021-11-20 05:55:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:55:31,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 6 states have internal predecessors, (187), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 225 [2021-11-20 05:55:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:31,129 INFO L225 Difference]: With dead ends: 8806 [2021-11-20 05:55:31,129 INFO L226 Difference]: Without dead ends: 5129 [2021-11-20 05:55:31,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:55:31,143 INFO L933 BasicCegarLoop]: 3120 mSDtfsCounter, 7272 mSDsluCounter, 6625 mSDsCounter, 0 mSdLazyCounter, 6762 mSolverCounterSat, 3365 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7425 SdHoareTripleChecker+Valid, 9745 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3365 IncrementalHoareTripleChecker+Valid, 6762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:31,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7425 Valid, 9745 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3365 Valid, 6762 Invalid, 1 Unknown, 0 Unchecked, 50.1s Time] [2021-11-20 05:55:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2021-11-20 05:55:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 3682. [2021-11-20 05:55:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3004 states have (on average 1.2153794940079894) internal successors, (3651), 3049 states have internal predecessors, (3651), 559 states have call successors, (559), 118 states have call predecessors, (559), 118 states have return successors, (558), 538 states have call predecessors, (558), 558 states have call successors, (558) [2021-11-20 05:55:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 4768 transitions. [2021-11-20 05:55:31,466 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 4768 transitions. Word has length 225 [2021-11-20 05:55:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:31,467 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 4768 transitions. [2021-11-20 05:55:31,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 6 states have internal predecessors, (187), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 05:55:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 4768 transitions. [2021-11-20 05:55:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-20 05:55:31,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:31,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:31,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:55:31,474 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash -703290854, now seen corresponding path program 1 times [2021-11-20 05:55:31,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:31,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859010855] [2021-11-20 05:55:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:31,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:55:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:55:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:55:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:55:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:55:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:55:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:55:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:55:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:55:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 05:55:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:55:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:55:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:55:32,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:32,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859010855] [2021-11-20 05:55:32,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859010855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:32,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:55:32,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294402454] [2021-11-20 05:55:32,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:32,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:55:32,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:55:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:55:32,249 INFO L87 Difference]: Start difference. First operand 3682 states and 4768 transitions. Second operand has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 05:55:33,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:35,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:37,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:40,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:26,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:28,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:30,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:32,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:34,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:36,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:39,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:41,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:43,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:45,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:45,525 INFO L93 Difference]: Finished difference Result 8937 states and 12295 transitions. [2021-11-20 05:56:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:56:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 228 [2021-11-20 05:56:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:45,561 INFO L225 Difference]: With dead ends: 8937 [2021-11-20 05:56:45,561 INFO L226 Difference]: Without dead ends: 5260 [2021-11-20 05:56:45,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:56:45,584 INFO L933 BasicCegarLoop]: 3190 mSDtfsCounter, 8801 mSDsluCounter, 6969 mSDsCounter, 0 mSdLazyCounter, 7449 mSolverCounterSat, 3424 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8944 SdHoareTripleChecker+Valid, 10159 SdHoareTripleChecker+Invalid, 10885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3424 IncrementalHoareTripleChecker+Valid, 7449 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:45,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8944 Valid, 10159 Invalid, 10885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3424 Valid, 7449 Invalid, 12 Unknown, 0 Unchecked, 71.8s Time] [2021-11-20 05:56:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2021-11-20 05:56:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 3680. [2021-11-20 05:56:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3003 states have (on average 1.2151182151182152) internal successors, (3649), 3048 states have internal predecessors, (3649), 558 states have call successors, (558), 118 states have call predecessors, (558), 118 states have return successors, (557), 537 states have call predecessors, (557), 557 states have call successors, (557) [2021-11-20 05:56:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4764 transitions. [2021-11-20 05:56:46,031 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4764 transitions. Word has length 228 [2021-11-20 05:56:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:46,032 INFO L470 AbstractCegarLoop]: Abstraction has 3680 states and 4764 transitions. [2021-11-20 05:56:46,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 6 states have internal predecessors, (188), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 05:56:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4764 transitions. [2021-11-20 05:56:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-20 05:56:46,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:46,039 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:46,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:56:46,040 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:46,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1683900857, now seen corresponding path program 1 times [2021-11-20 05:56:46,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:46,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402464453] [2021-11-20 05:56:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:46,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:56:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:56:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:56:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:56:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:56:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:56:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:56:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:56:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:56:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:56:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:56:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:56:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:56:47,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:47,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402464453] [2021-11-20 05:56:47,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402464453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:47,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:47,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:56:47,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971337770] [2021-11-20 05:56:47,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:47,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:56:47,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:56:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:47,134 INFO L87 Difference]: Start difference. First operand 3680 states and 4764 transitions. Second operand has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 05:56:49,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:51,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:04,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:06,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:08,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:10,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:12,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:14,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:16,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:19,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:19,205 INFO L93 Difference]: Finished difference Result 8797 states and 12134 transitions. [2021-11-20 05:58:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:58:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 229 [2021-11-20 05:58:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:19,230 INFO L225 Difference]: With dead ends: 8797 [2021-11-20 05:58:19,230 INFO L226 Difference]: Without dead ends: 5122 [2021-11-20 05:58:19,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:58:19,244 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 5480 mSDsluCounter, 8640 mSDsCounter, 0 mSdLazyCounter, 10018 mSolverCounterSat, 1782 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5631 SdHoareTripleChecker+Valid, 11735 SdHoareTripleChecker+Invalid, 11810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1782 IncrementalHoareTripleChecker+Valid, 10018 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:19,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5631 Valid, 11735 Invalid, 11810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1782 Valid, 10018 Invalid, 10 Unknown, 0 Unchecked, 90.2s Time] [2021-11-20 05:58:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2021-11-20 05:58:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 3676. [2021-11-20 05:58:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3001 states have (on average 1.214595134955015) internal successors, (3645), 3046 states have internal predecessors, (3645), 556 states have call successors, (556), 118 states have call predecessors, (556), 118 states have return successors, (555), 535 states have call predecessors, (555), 555 states have call successors, (555) [2021-11-20 05:58:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4756 transitions. [2021-11-20 05:58:19,582 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4756 transitions. Word has length 229 [2021-11-20 05:58:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:19,583 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 4756 transitions. [2021-11-20 05:58:19,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 6 states have internal predecessors, (189), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 05:58:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4756 transitions. [2021-11-20 05:58:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-20 05:58:19,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:19,591 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:19,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 05:58:19,592 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1106225570, now seen corresponding path program 1 times [2021-11-20 05:58:19,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:19,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482086936] [2021-11-20 05:58:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:19,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:58:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:58:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:58:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:58:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:58:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:58:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:58:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:58:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:58:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 05:58:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:58:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 05:58:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:58:20,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:20,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482086936] [2021-11-20 05:58:20,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482086936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:20,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:20,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:58:20,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489827756] [2021-11-20 05:58:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:20,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:58:20,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:58:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:58:20,604 INFO L87 Difference]: Start difference. First operand 3676 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 05:58:22,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:58:25,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:52,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:54,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:56,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:59,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:00:01,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:00:03,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:00:05,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:00:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:05,711 INFO L93 Difference]: Finished difference Result 8779 states and 12101 transitions. [2021-11-20 06:00:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:00:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 230 [2021-11-20 06:00:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:05,740 INFO L225 Difference]: With dead ends: 8779 [2021-11-20 06:00:05,741 INFO L226 Difference]: Without dead ends: 5108 [2021-11-20 06:00:05,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:00:05,757 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 9147 mSDsluCounter, 5649 mSDsCounter, 0 mSdLazyCounter, 6931 mSolverCounterSat, 3539 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9309 SdHoareTripleChecker+Valid, 8872 SdHoareTripleChecker+Invalid, 10479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3539 IncrementalHoareTripleChecker+Valid, 6931 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:05,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9309 Valid, 8872 Invalid, 10479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3539 Valid, 6931 Invalid, 9 Unknown, 0 Unchecked, 103.1s Time] [2021-11-20 06:00:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5108 states. [2021-11-20 06:00:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5108 to 3672. [2021-11-20 06:00:06,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 2999 states have (on average 1.2140713571190396) internal successors, (3641), 3044 states have internal predecessors, (3641), 554 states have call successors, (554), 118 states have call predecessors, (554), 118 states have return successors, (553), 533 states have call predecessors, (553), 553 states have call successors, (553) [2021-11-20 06:00:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4748 transitions. [2021-11-20 06:00:06,181 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4748 transitions. Word has length 230 [2021-11-20 06:00:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:06,182 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 4748 transitions. [2021-11-20 06:00:06,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 6 states have internal predecessors, (190), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 06:00:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4748 transitions. [2021-11-20 06:00:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-20 06:00:06,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:06,189 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:00:06,189 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:00:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash -313633408, now seen corresponding path program 1 times [2021-11-20 06:00:06,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:06,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214039739] [2021-11-20 06:00:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:06,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 06:00:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:00:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:00:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:00:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:00:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:00:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:00:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:00:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:00:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:00:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 06:00:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:00:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-20 06:00:07,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214039739] [2021-11-20 06:00:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214039739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:00:07,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:00:07,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:00:07,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135138646] [2021-11-20 06:00:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:00:07,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:00:07,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:00:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:00:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:00:07,059 INFO L87 Difference]: Start difference. First operand 3672 states and 4748 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 5 states have internal predecessors, (188), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 06:00:09,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:00:11,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []