./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961e7f6fbd61acd9d4f1771460dcf26fd486b3de35e5e0e3ca8e6e03bda0fabc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:30:09,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:30:09,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:30:10,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:30:10,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:30:10,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:30:10,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:30:10,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:30:10,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:30:10,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:30:10,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:30:10,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:30:10,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:30:10,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:30:10,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:30:10,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:30:10,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:30:10,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:30:10,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:30:10,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:30:10,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:30:10,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:30:10,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:30:10,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:30:10,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:30:10,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:30:10,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:30:10,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:30:10,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:30:10,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:30:10,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:30:10,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:30:10,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:30:10,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:30:10,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:30:10,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:30:10,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:30:10,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:30:10,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:30:10,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:30:10,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:30:10,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:30:10,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:30:10,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:30:10,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:30:10,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:30:10,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:30:10,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:30:10,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:30:10,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:30:10,098 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:30:10,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:30:10,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:30:10,099 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:30:10,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:30:10,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:30:10,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:30:10,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:30:10,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:30:10,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:30:10,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:30:10,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:30:10,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:30:10,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:30:10,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:30:10,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:30:10,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:30:10,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:30:10,102 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_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961e7f6fbd61acd9d4f1771460dcf26fd486b3de35e5e0e3ca8e6e03bda0fabc [2021-12-06 19:30:10,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:30:10,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:30:10,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:30:10,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:30:10,309 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:30:10,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2021-12-06 19:30:10,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/data/ea9b9226f/95df4e6412d540539afbc05366c28774/FLAG34f4cae74 [2021-12-06 19:30:10,747 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:30:10,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2021-12-06 19:30:10,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/data/ea9b9226f/95df4e6412d540539afbc05366c28774/FLAG34f4cae74 [2021-12-06 19:30:10,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/data/ea9b9226f/95df4e6412d540539afbc05366c28774 [2021-12-06 19:30:10,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:30:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:30:10,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:30:10,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:30:10,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:30:10,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:30:10" (1/1) ... [2021-12-06 19:30:10,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533e6d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:10, skipping insertion in model container [2021-12-06 19:30:10,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:30:10" (1/1) ... [2021-12-06 19:30:10,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:30:10,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:30:10,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:30:10,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:30:11,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:30:11,050 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:30:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11 WrapperNode [2021-12-06 19:30:11,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:30:11,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:30:11,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:30:11,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:30:11,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,082 INFO L137 Inliner]: procedures = 117, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2021-12-06 19:30:11,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:30:11,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:30:11,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:30:11,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:30:11,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:30:11,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:30:11,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:30:11,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:30:11,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (1/1) ... [2021-12-06 19:30:11,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:30:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:11,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:30:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:30:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:30:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:30:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:30:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:30:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:30:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:30:11,224 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:30:11,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:30:11,329 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:30:11,334 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:30:11,334 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 19:30:11,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:30:11 BoogieIcfgContainer [2021-12-06 19:30:11,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:30:11,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:30:11,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:30:11,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:30:11,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:30:10" (1/3) ... [2021-12-06 19:30:11,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d66501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:30:11, skipping insertion in model container [2021-12-06 19:30:11,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:30:11" (2/3) ... [2021-12-06 19:30:11,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d66501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:30:11, skipping insertion in model container [2021-12-06 19:30:11,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:30:11" (3/3) ... [2021-12-06 19:30:11,342 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2021-12-06 19:30:11,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:30:11,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-06 19:30:11,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:30:11,383 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-06 19:30:11,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-06 19:30:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:30:11,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-12-06 19:30:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30352183] [2021-12-06 19:30:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:11,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:11,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30352183] [2021-12-06 19:30:11,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30352183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:11,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:11,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:30:11,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589763349] [2021-12-06 19:30:11,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:30:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:30:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,566 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:11,603 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-12-06 19:30:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:30:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:30:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:11,614 INFO L225 Difference]: With dead ends: 58 [2021-12-06 19:30:11,614 INFO L226 Difference]: Without dead ends: 54 [2021-12-06 19:30:11,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,619 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:11,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-06 19:30:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 33. [2021-12-06 19:30:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-06 19:30:11,649 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2021-12-06 19:30:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:11,649 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-06 19:30:11,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-12-06 19:30:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:30:11,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:30:11,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 889508820, now seen corresponding path program 1 times [2021-12-06 19:30:11,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285515709] [2021-12-06 19:30:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285515709] [2021-12-06 19:30:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285515709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:11,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:30:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673711489] [2021-12-06 19:30:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:11,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:30:11,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:30:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:30:11,683 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:11,705 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-12-06 19:30:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:30:11,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:30:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:11,706 INFO L225 Difference]: With dead ends: 31 [2021-12-06 19:30:11,706 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:30:11,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:30:11,708 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:11,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:30:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 19:30:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-12-06 19:30:11,714 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 6 [2021-12-06 19:30:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:11,714 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-12-06 19:30:11,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-12-06 19:30:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:30:11,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:30:11,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 889508821, now seen corresponding path program 1 times [2021-12-06 19:30:11,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858459102] [2021-12-06 19:30:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:11,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:11,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858459102] [2021-12-06 19:30:11,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858459102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:11,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:11,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:30:11,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658324532] [2021-12-06 19:30:11,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:11,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:30:11,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:30:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,767 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:11,792 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-12-06 19:30:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:30:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:30:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:11,793 INFO L225 Difference]: With dead ends: 30 [2021-12-06 19:30:11,793 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 19:30:11,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,795 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:11,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 19:30:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-06 19:30:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-12-06 19:30:11,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-12-06 19:30:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:11,800 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-12-06 19:30:11,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-12-06 19:30:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:30:11,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:30:11,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-12-06 19:30:11,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238909935] [2021-12-06 19:30:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:11,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238909935] [2021-12-06 19:30:11,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238909935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:11,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:11,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:30:11,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935891150] [2021-12-06 19:30:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:11,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:30:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:30:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,850 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:11,891 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-12-06 19:30:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:30:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:30:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:11,892 INFO L225 Difference]: With dead ends: 53 [2021-12-06 19:30:11,893 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 19:30:11,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:30:11,894 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:11,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 19:30:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2021-12-06 19:30:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-06 19:30:11,900 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2021-12-06 19:30:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:11,900 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-06 19:30:11,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-06 19:30:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 19:30:11,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:30:11,901 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash 119484121, now seen corresponding path program 1 times [2021-12-06 19:30:11,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205030809] [2021-12-06 19:30:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:11,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:11,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205030809] [2021-12-06 19:30:11,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205030809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:11,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:11,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:30:11,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043017659] [2021-12-06 19:30:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:11,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:30:11,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:11,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:30:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:11,944 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:11,970 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-12-06 19:30:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:30:11,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 19:30:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:11,971 INFO L225 Difference]: With dead ends: 29 [2021-12-06 19:30:11,971 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 19:30:11,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:30:11,972 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:11,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 19:30:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 19:30:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.375) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-12-06 19:30:11,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2021-12-06 19:30:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:11,976 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-12-06 19:30:11,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-12-06 19:30:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 19:30:11,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:11,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:11,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:30:11,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 119484122, now seen corresponding path program 1 times [2021-12-06 19:30:11,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79366674] [2021-12-06 19:30:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:11,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:12,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79366674] [2021-12-06 19:30:12,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79366674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:12,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:12,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:30:12,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615126597] [2021-12-06 19:30:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:12,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:30:12,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:30:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:30:12,030 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:12,069 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-12-06 19:30:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:30:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 19:30:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:12,070 INFO L225 Difference]: With dead ends: 40 [2021-12-06 19:30:12,070 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 19:30:12,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:30:12,071 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:12,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 32 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 19:30:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-12-06 19:30:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-12-06 19:30:12,074 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 8 [2021-12-06 19:30:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:12,074 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-12-06 19:30:12,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-12-06 19:30:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:30:12,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:12,075 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:12,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:30:12,079 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-12-06 19:30:12,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460084064] [2021-12-06 19:30:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:12,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:12,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460084064] [2021-12-06 19:30:12,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460084064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:12,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473445140] [2021-12-06 19:30:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:12,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:12,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:12,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:30:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:30:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:12,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473445140] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:12,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:12,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-12-06 19:30:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64894631] [2021-12-06 19:30:12,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:12,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:30:12,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:30:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:30:12,419 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:12,528 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2021-12-06 19:30:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:30:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 19:30:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:12,529 INFO L225 Difference]: With dead ends: 78 [2021-12-06 19:30:12,529 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 19:30:12,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:30:12,530 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 98 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:12,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 107 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 19:30:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 31. [2021-12-06 19:30:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-06 19:30:12,534 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 10 [2021-12-06 19:30:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:12,534 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-06 19:30:12,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-06 19:30:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:30:12,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:12,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:12,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:30:12,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 19:30:12,736 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash -204531026, now seen corresponding path program 1 times [2021-12-06 19:30:12,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:12,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748332871] [2021-12-06 19:30:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:12,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:12,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748332871] [2021-12-06 19:30:12,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748332871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:12,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:12,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:30:12,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496819988] [2021-12-06 19:30:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:12,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:30:12,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:30:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:12,784 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:12,794 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-12-06 19:30:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:30:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:30:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:12,795 INFO L225 Difference]: With dead ends: 30 [2021-12-06 19:30:12,795 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 19:30:12,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:30:12,796 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:12,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 19:30:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 19:30:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-06 19:30:12,798 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 12 [2021-12-06 19:30:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:12,799 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-06 19:30:12,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-06 19:30:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:30:12,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:12,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:12,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:30:12,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2044161814, now seen corresponding path program 1 times [2021-12-06 19:30:12,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:12,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504011256] [2021-12-06 19:30:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:12,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504011256] [2021-12-06 19:30:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504011256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:12,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:12,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:30:12,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781270060] [2021-12-06 19:30:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:12,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:30:12,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:30:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:30:12,854 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:12,899 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-12-06 19:30:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:30:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 19:30:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:12,900 INFO L225 Difference]: With dead ends: 31 [2021-12-06 19:30:12,900 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 19:30:12,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:30:12,901 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:12,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 90 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 19:30:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 19:30:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-06 19:30:12,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2021-12-06 19:30:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:12,903 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-06 19:30:12,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-06 19:30:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:30:12,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:12,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:12,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:30:12,904 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1343097236, now seen corresponding path program 1 times [2021-12-06 19:30:12,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:12,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814508940] [2021-12-06 19:30:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:12,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:12,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:12,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814508940] [2021-12-06 19:30:12,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814508940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:12,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:12,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:30:12,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424363703] [2021-12-06 19:30:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:12,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:30:12,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:30:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:30:12,984 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:13,031 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-12-06 19:30:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:30:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 19:30:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:13,032 INFO L225 Difference]: With dead ends: 33 [2021-12-06 19:30:13,032 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 19:30:13,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:30:13,033 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:13,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:30:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 19:30:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-12-06 19:30:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-06 19:30:13,037 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2021-12-06 19:30:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:13,037 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-06 19:30:13,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-06 19:30:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:30:13,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:13,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:13,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:30:13,038 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1914076215, now seen corresponding path program 1 times [2021-12-06 19:30:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86394640] [2021-12-06 19:30:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:13,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:13,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:13,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86394640] [2021-12-06 19:30:13,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86394640] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139884841] [2021-12-06 19:30:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:13,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:13,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:30:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:13,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 19:30:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:13,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:13,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:13,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139884841] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:13,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:13,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2021-12-06 19:30:13,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642583823] [2021-12-06 19:30:13,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:13,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:30:13,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:30:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:30:13,355 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:13,460 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-12-06 19:30:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:30:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 19:30:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:13,461 INFO L225 Difference]: With dead ends: 36 [2021-12-06 19:30:13,461 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 19:30:13,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:30:13,462 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:13,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 73 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 19:30:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-12-06 19:30:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-06 19:30:13,464 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2021-12-06 19:30:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:13,464 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 19:30:13,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-06 19:30:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:30:13,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:13,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:13,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:30:13,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:13,666 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1668744869, now seen corresponding path program 2 times [2021-12-06 19:30:13,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:13,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018604810] [2021-12-06 19:30:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:13,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:13,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018604810] [2021-12-06 19:30:13,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018604810] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637748709] [2021-12-06 19:30:13,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:30:13,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:13,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:13,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:13,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:30:13,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:30:13,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:13,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 19:30:13,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:13,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:14,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:30:14,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:30:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:14,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:14,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:30:14,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:14,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637748709] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:14,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:14,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-06 19:30:14,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822672343] [2021-12-06 19:30:14,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:14,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:30:14,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:14,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:30:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:30:14,493 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:14,736 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-12-06 19:30:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:30:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 19:30:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:14,737 INFO L225 Difference]: With dead ends: 52 [2021-12-06 19:30:14,737 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 19:30:14,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:30:14,738 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:14,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 168 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2021-12-06 19:30:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 19:30:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2021-12-06 19:30:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-12-06 19:30:14,741 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 22 [2021-12-06 19:30:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:14,742 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-12-06 19:30:14,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-12-06 19:30:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:30:14,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:14,742 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] [2021-12-06 19:30:14,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:30:14,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:14,944 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1831987682, now seen corresponding path program 1 times [2021-12-06 19:30:14,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377913031] [2021-12-06 19:30:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:14,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:15,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377913031] [2021-12-06 19:30:15,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377913031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846096028] [2021-12-06 19:30:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:15,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:15,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:15,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:30:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 19:30:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:15,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:15,294 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:15,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:15,339 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 19:30:15,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-12-06 19:30:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:15,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:15,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:15,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:15,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846096028] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:15,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:15,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2021-12-06 19:30:15,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761431217] [2021-12-06 19:30:15,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:15,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 19:30:15,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 19:30:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:30:15,480 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:15,650 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-12-06 19:30:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:30:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 19:30:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:15,651 INFO L225 Difference]: With dead ends: 50 [2021-12-06 19:30:15,651 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 19:30:15,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:30:15,653 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:15,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 105 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2021-12-06 19:30:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 19:30:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-12-06 19:30:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-12-06 19:30:15,656 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2021-12-06 19:30:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:15,657 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-12-06 19:30:15,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-12-06 19:30:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:30:15,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:15,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:15,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:30:15,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:30:15,859 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash -938115935, now seen corresponding path program 2 times [2021-12-06 19:30:15,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:15,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968365666] [2021-12-06 19:30:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:15,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:16,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968365666] [2021-12-06 19:30:16,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968365666] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778935796] [2021-12-06 19:30:16,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:30:16,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:16,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:16,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:16,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:30:16,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:30:16,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:16,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 19:30:16,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:16,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:16,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778935796] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:16,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2021-12-06 19:30:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359478023] [2021-12-06 19:30:16,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:16,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 19:30:16,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 19:30:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:30:16,261 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:16,363 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-12-06 19:30:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:30:16,364 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 19:30:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:16,364 INFO L225 Difference]: With dead ends: 51 [2021-12-06 19:30:16,364 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 19:30:16,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:30:16,365 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 178 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:16,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 110 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 19:30:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2021-12-06 19:30:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-12-06 19:30:16,368 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 28 [2021-12-06 19:30:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:16,368 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-12-06 19:30:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-12-06 19:30:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:30:16,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:16,369 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:16,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:30:16,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 19:30:16,570 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1721723482, now seen corresponding path program 3 times [2021-12-06 19:30:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:16,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35819355] [2021-12-06 19:30:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:16,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:16,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35819355] [2021-12-06 19:30:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35819355] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044018389] [2021-12-06 19:30:16,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:30:16,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:16,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:16,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:30:16,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:30:16,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:16,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 19:30:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:16,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:16,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:16,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:16,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:17,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044018389] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:17,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:17,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-12-06 19:30:17,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993717282] [2021-12-06 19:30:17,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:17,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:30:17,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:30:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:30:17,053 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:17,276 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2021-12-06 19:30:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:30:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 19:30:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:17,277 INFO L225 Difference]: With dead ends: 92 [2021-12-06 19:30:17,277 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 19:30:17,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:30:17,279 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 205 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:17,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 184 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 225 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-06 19:30:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 19:30:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 48. [2021-12-06 19:30:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-06 19:30:17,283 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 31 [2021-12-06 19:30:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:17,283 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-06 19:30:17,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-06 19:30:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:30:17,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:17,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:17,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:30:17,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 19:30:17,485 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1481717885, now seen corresponding path program 3 times [2021-12-06 19:30:17,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:17,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9379497] [2021-12-06 19:30:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:17,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:17,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:17,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9379497] [2021-12-06 19:30:17,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9379497] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:17,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275659523] [2021-12-06 19:30:17,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:30:17,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:17,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:17,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:30:17,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:30:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:17,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 19:30:17,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:17,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:17,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:17,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:17,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:30:17,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:30:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:18,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:18,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-12-06 19:30:18,113 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 19:30:18,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2021-12-06 19:30:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:18,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275659523] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:18,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:18,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 33 [2021-12-06 19:30:18,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276681200] [2021-12-06 19:30:18,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:18,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 19:30:18,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 19:30:18,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 19:30:18,259 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:18,487 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-12-06 19:30:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:30:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:30:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:18,488 INFO L225 Difference]: With dead ends: 75 [2021-12-06 19:30:18,488 INFO L226 Difference]: Without dead ends: 71 [2021-12-06 19:30:18,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=1536, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 19:30:18,489 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 93 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:18,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 184 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2021-12-06 19:30:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-06 19:30:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2021-12-06 19:30:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-12-06 19:30:18,493 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 33 [2021-12-06 19:30:18,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:18,493 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-12-06 19:30:18,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-12-06 19:30:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:30:18,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:18,494 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:18,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:30:18,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 19:30:18,696 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash 374629827, now seen corresponding path program 4 times [2021-12-06 19:30:18,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:18,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287153706] [2021-12-06 19:30:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:18,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:18,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287153706] [2021-12-06 19:30:18,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287153706] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503511555] [2021-12-06 19:30:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:30:18,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:18,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:18,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:30:18,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:30:18,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:18,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 19:30:18,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:18,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:19,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:19,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503511555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:19,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:19,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 22 [2021-12-06 19:30:19,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198306030] [2021-12-06 19:30:19,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:19,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 19:30:19,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 19:30:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:30:19,077 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:19,275 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-12-06 19:30:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:30:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 19:30:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:19,275 INFO L225 Difference]: With dead ends: 82 [2021-12-06 19:30:19,275 INFO L226 Difference]: Without dead ends: 82 [2021-12-06 19:30:19,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:30:19,276 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 254 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:19,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 167 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-06 19:30:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-12-06 19:30:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 74 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2021-12-06 19:30:19,279 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 35 [2021-12-06 19:30:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:19,280 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2021-12-06 19:30:19,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2021-12-06 19:30:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:30:19,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:19,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:19,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:30:19,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:30:19,482 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1807284806, now seen corresponding path program 4 times [2021-12-06 19:30:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:19,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031518341] [2021-12-06 19:30:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:19,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:19,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:19,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031518341] [2021-12-06 19:30:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031518341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:19,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370346872] [2021-12-06 19:30:19,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:30:19,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:19,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:19,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:19,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:30:19,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:30:19,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:19,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 19:30:19,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:19,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:19,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 19:30:19,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 19:30:19,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:19,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:19,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:19,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370346872] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:19,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:19,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2021-12-06 19:30:19,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749711697] [2021-12-06 19:30:19,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:30:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:30:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:30:19,923 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:20,060 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2021-12-06 19:30:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:30:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 19:30:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:20,061 INFO L225 Difference]: With dead ends: 70 [2021-12-06 19:30:20,061 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 19:30:20,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:30:20,062 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:20,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 156 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 19:30:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-12-06 19:30:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-12-06 19:30:20,064 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 35 [2021-12-06 19:30:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:20,064 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-12-06 19:30:20,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-12-06 19:30:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 19:30:20,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:20,065 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:20,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:30:20,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 19:30:20,266 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1667122081, now seen corresponding path program 5 times [2021-12-06 19:30:20,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:20,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622318909] [2021-12-06 19:30:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:20,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:20,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622318909] [2021-12-06 19:30:20,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622318909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957445972] [2021-12-06 19:30:20,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:20,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:20,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:20,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:30:20,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:30:20,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:20,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 19:30:20,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:20,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:20,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:20,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:20,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:20,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:20,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957445972] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:20,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:20,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2021-12-06 19:30:20,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824466598] [2021-12-06 19:30:20,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:20,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:30:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:30:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:30:20,707 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:20,996 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2021-12-06 19:30:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:30:20,996 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-06 19:30:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:20,997 INFO L225 Difference]: With dead ends: 129 [2021-12-06 19:30:20,997 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 19:30:20,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:30:20,998 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 211 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:20,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 277 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 359 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2021-12-06 19:30:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 19:30:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 59. [2021-12-06 19:30:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-12-06 19:30:21,000 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 40 [2021-12-06 19:30:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:21,001 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-12-06 19:30:21,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-12-06 19:30:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 19:30:21,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:21,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:21,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:30:21,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:21,203 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1130414300, now seen corresponding path program 5 times [2021-12-06 19:30:21,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:21,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651624630] [2021-12-06 19:30:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:21,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:21,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:21,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651624630] [2021-12-06 19:30:21,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651624630] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:21,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608151782] [2021-12-06 19:30:21,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:21,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:21,332 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:21,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:30:21,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:30:21,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:21,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 19:30:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:21,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:21,517 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:21,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:21,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:21,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:21,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:21,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:21,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608151782] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:21,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:21,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2021-12-06 19:30:21,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891548440] [2021-12-06 19:30:21,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:30:21,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:30:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:30:21,693 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:21,954 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-12-06 19:30:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:30:21,954 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-06 19:30:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:21,954 INFO L225 Difference]: With dead ends: 90 [2021-12-06 19:30:21,954 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 19:30:21,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:30:21,956 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 169 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:21,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 254 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 322 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2021-12-06 19:30:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 19:30:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-12-06 19:30:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-12-06 19:30:21,958 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 42 [2021-12-06 19:30:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:21,958 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-12-06 19:30:21,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-12-06 19:30:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 19:30:21,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:21,959 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:21,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:30:22,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:22,161 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 537281572, now seen corresponding path program 6 times [2021-12-06 19:30:22,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673356166] [2021-12-06 19:30:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:22,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:22,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673356166] [2021-12-06 19:30:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673356166] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356133426] [2021-12-06 19:30:22,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:22,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:22,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:22,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:30:22,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 19:30:22,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:22,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:30:22,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:22,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:22,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356133426] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:22,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:22,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-12-06 19:30:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726037256] [2021-12-06 19:30:22,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:22,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:30:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:30:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:30:22,805 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:22,996 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2021-12-06 19:30:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:30:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-06 19:30:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:22,997 INFO L225 Difference]: With dead ends: 66 [2021-12-06 19:30:22,997 INFO L226 Difference]: Without dead ends: 66 [2021-12-06 19:30:22,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1363, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 19:30:22,998 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 360 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:22,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 197 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:30:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-06 19:30:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-12-06 19:30:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-12-06 19:30:22,999 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 44 [2021-12-06 19:30:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:23,000 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-12-06 19:30:23,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-12-06 19:30:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 19:30:23,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:23,000 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:23,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 19:30:23,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:23,202 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash 967653856, now seen corresponding path program 7 times [2021-12-06 19:30:23,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272132334] [2021-12-06 19:30:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:23,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:23,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272132334] [2021-12-06 19:30:23,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272132334] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846009207] [2021-12-06 19:30:23,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:30:23,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:23,375 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:23,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:30:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:30:23,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:23,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:23,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:23,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:23,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:23,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:23,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846009207] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:23,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:23,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2021-12-06 19:30:23,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29112909] [2021-12-06 19:30:23,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:23,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 19:30:23,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 19:30:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:30:23,736 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:24,034 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-12-06 19:30:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:30:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-06 19:30:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:24,035 INFO L225 Difference]: With dead ends: 100 [2021-12-06 19:30:24,035 INFO L226 Difference]: Without dead ends: 67 [2021-12-06 19:30:24,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=1512, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 19:30:24,036 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 158 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:24,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 397 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 551 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2021-12-06 19:30:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-06 19:30:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2021-12-06 19:30:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-12-06 19:30:24,037 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 49 [2021-12-06 19:30:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-12-06 19:30:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-12-06 19:30:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:30:24,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:24,038 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:24,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:30:24,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 19:30:24,239 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 999955645, now seen corresponding path program 8 times [2021-12-06 19:30:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391003962] [2021-12-06 19:30:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:24,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:24,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391003962] [2021-12-06 19:30:24,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391003962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940567885] [2021-12-06 19:30:24,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:30:24,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:24,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:24,402 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:24,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:30:24,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:30:24,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:24,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 19:30:24,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:24,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:24,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:24,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940567885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:24,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 31 [2021-12-06 19:30:24,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286185240] [2021-12-06 19:30:24,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:30:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:30:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:30:24,783 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 32 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:25,016 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2021-12-06 19:30:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:30:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 19:30:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:25,017 INFO L225 Difference]: With dead ends: 77 [2021-12-06 19:30:25,017 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:30:25,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:30:25,018 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 421 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:25,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 315 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:30:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:30:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2021-12-06 19:30:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 70 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2021-12-06 19:30:25,021 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 53 [2021-12-06 19:30:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:25,021 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2021-12-06 19:30:25,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2021-12-06 19:30:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:30:25,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:25,022 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:25,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:30:25,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 19:30:25,223 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash -36316953, now seen corresponding path program 9 times [2021-12-06 19:30:25,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774659693] [2021-12-06 19:30:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:25,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:25,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774659693] [2021-12-06 19:30:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774659693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:25,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691292815] [2021-12-06 19:30:25,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:30:25,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:25,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:25,403 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:30:25,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 19:30:25,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:25,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 19:30:25,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:25,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:25,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:25,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:25,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:25,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:25,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691292815] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:25,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:25,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2021-12-06 19:30:25,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339007962] [2021-12-06 19:30:25,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:25,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:30:25,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:30:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:30:25,859 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:26,361 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2021-12-06 19:30:26,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:30:26,361 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-06 19:30:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:26,362 INFO L225 Difference]: With dead ends: 138 [2021-12-06 19:30:26,362 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 19:30:26,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=2340, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:30:26,363 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 294 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:26,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 552 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:30:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 19:30:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-12-06 19:30:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-12-06 19:30:26,365 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 58 [2021-12-06 19:30:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:26,365 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-12-06 19:30:26,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-12-06 19:30:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 19:30:26,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:26,366 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:26,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:30:26,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:26,567 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:26,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 514711210, now seen corresponding path program 10 times [2021-12-06 19:30:26,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:26,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257146663] [2021-12-06 19:30:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:26,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 28 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:26,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:26,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257146663] [2021-12-06 19:30:26,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257146663] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:26,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283711298] [2021-12-06 19:30:26,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:30:26,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:26,775 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:26,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:30:26,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:30:26,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 19:30:26,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 45 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:27,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:27,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 45 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:27,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283711298] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:27,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:27,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 35 [2021-12-06 19:30:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859017545] [2021-12-06 19:30:27,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:27,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 19:30:27,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 19:30:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:30:27,249 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 36 states, 35 states have (on average 3.657142857142857) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:27,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:27,560 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-12-06 19:30:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:30:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.657142857142857) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-06 19:30:27,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:27,561 INFO L225 Difference]: With dead ends: 88 [2021-12-06 19:30:27,561 INFO L226 Difference]: Without dead ends: 88 [2021-12-06 19:30:27,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 19:30:27,562 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 550 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:27,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 372 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:30:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-06 19:30:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2021-12-06 19:30:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 81 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-12-06 19:30:27,564 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 62 [2021-12-06 19:30:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:27,564 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-12-06 19:30:27,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.657142857142857) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-12-06 19:30:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 19:30:27,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:27,565 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:27,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 19:30:27,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:27,766 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash -94420198, now seen corresponding path program 11 times [2021-12-06 19:30:27,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:27,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22883270] [2021-12-06 19:30:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:27,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:28,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22883270] [2021-12-06 19:30:28,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22883270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273598694] [2021-12-06 19:30:28,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:28,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:28,020 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:28,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 19:30:28,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 19:30:28,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:28,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-06 19:30:28,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:28,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:28,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:28,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:30:28,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 19:30:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 45 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:28,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:29,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:29,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 66 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:29,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273598694] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:29,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:29,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 56 [2021-12-06 19:30:29,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602150812] [2021-12-06 19:30:29,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:29,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 19:30:29,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 19:30:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:30:29,579 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 56 states, 56 states have (on average 3.482142857142857) internal successors, (195), 56 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:30,278 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-12-06 19:30:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 19:30:30,279 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.482142857142857) internal successors, (195), 56 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 19:30:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:30,280 INFO L225 Difference]: With dead ends: 167 [2021-12-06 19:30:30,280 INFO L226 Difference]: Without dead ends: 164 [2021-12-06 19:30:30,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=509, Invalid=5191, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 19:30:30,282 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 172 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:30,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 923 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 637 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2021-12-06 19:30:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-06 19:30:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2021-12-06 19:30:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.143835616438356) internal successors, (167), 146 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2021-12-06 19:30:30,287 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 67 [2021-12-06 19:30:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:30,287 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2021-12-06 19:30:30,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.482142857142857) internal successors, (195), 56 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2021-12-06 19:30:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 19:30:30,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:30,288 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:30,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 19:30:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:30,489 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1045878647, now seen corresponding path program 6 times [2021-12-06 19:30:30,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:30,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481792126] [2021-12-06 19:30:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:30,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:30,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481792126] [2021-12-06 19:30:30,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481792126] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485305116] [2021-12-06 19:30:30,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:30,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:30,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:30,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 19:30:30,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 19:30:30,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:30,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 19:30:30,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:30,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:31,082 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:31,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:31,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:31,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:31,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:31,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:31,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485305116] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:31,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 37 [2021-12-06 19:30:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762644718] [2021-12-06 19:30:31,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 19:30:31,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 19:30:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 19:30:31,337 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand has 37 states, 37 states have (on average 3.189189189189189) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:31,964 INFO L93 Difference]: Finished difference Result 217 states and 244 transitions. [2021-12-06 19:30:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:30:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.189189189189189) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 19:30:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:31,965 INFO L225 Difference]: With dead ends: 217 [2021-12-06 19:30:31,965 INFO L226 Difference]: Without dead ends: 119 [2021-12-06 19:30:31,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=3183, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 19:30:31,966 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 236 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:31,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 789 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1109 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2021-12-06 19:30:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-06 19:30:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-12-06 19:30:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.1304347826086956) internal successors, (130), 115 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-12-06 19:30:31,969 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 69 [2021-12-06 19:30:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:31,969 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-12-06 19:30:31,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.189189189189189) internal successors, (118), 37 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-12-06 19:30:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 19:30:31,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:31,969 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:31,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 19:30:32,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 19:30:32,171 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -83187244, now seen corresponding path program 7 times [2021-12-06 19:30:32,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:32,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286239693] [2021-12-06 19:30:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:32,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 45 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:32,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286239693] [2021-12-06 19:30:32,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286239693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080408361] [2021-12-06 19:30:32,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:30:32,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:32,398 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:32,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 19:30:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 19:30:32,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 66 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:32,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:32,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 66 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:32,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080408361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:32,965 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:32,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 38 [2021-12-06 19:30:32,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826882628] [2021-12-06 19:30:32,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:32,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 19:30:32,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 19:30:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1315, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:30:32,966 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 39 states, 38 states have (on average 4.0) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:33,401 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-12-06 19:30:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:30:33,402 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 4.0) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-06 19:30:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:33,402 INFO L225 Difference]: With dead ends: 131 [2021-12-06 19:30:33,403 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 19:30:33,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=557, Invalid=2413, Unknown=0, NotChecked=0, Total=2970 [2021-12-06 19:30:33,404 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 480 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:33,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 512 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:30:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 19:30:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2021-12-06 19:30:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.108695652173913) internal successors, (102), 92 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-12-06 19:30:33,408 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 73 [2021-12-06 19:30:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:33,408 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-12-06 19:30:33,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 4.0) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-12-06 19:30:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 19:30:33,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:33,409 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:33,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 19:30:33,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 19:30:33,610 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1424467667, now seen corresponding path program 12 times [2021-12-06 19:30:33,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:33,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909234078] [2021-12-06 19:30:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:33,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:33,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909234078] [2021-12-06 19:30:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909234078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032448395] [2021-12-06 19:30:33,841 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:33,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:33,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:33,842 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:33,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 19:30:33,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 19:30:33,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:33,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 19:30:33,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:33,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:34,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:30:34,345 INFO L354 Elim1Store]: treesize reduction 3, result has 76.9 percent of original size [2021-12-06 19:30:34,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 18 [2021-12-06 19:30:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-06 19:30:34,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:34,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-06 19:30:34,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 19:30:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-06 19:30:35,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032448395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:35,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:35,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9, 9] total 38 [2021-12-06 19:30:35,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702983936] [2021-12-06 19:30:35,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:35,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 19:30:35,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:35,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 19:30:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1308, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 19:30:35,103 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:36,115 INFO L93 Difference]: Finished difference Result 190 states and 213 transitions. [2021-12-06 19:30:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 19:30:36,115 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-06 19:30:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:36,116 INFO L225 Difference]: With dead ends: 190 [2021-12-06 19:30:36,116 INFO L226 Difference]: Without dead ends: 187 [2021-12-06 19:30:36,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=502, Invalid=6304, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 19:30:36,118 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:36,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 729 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 674 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2021-12-06 19:30:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-06 19:30:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 168. [2021-12-06 19:30:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 167 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 191 transitions. [2021-12-06 19:30:36,122 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 191 transitions. Word has length 76 [2021-12-06 19:30:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:36,122 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 191 transitions. [2021-12-06 19:30:36,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 191 transitions. [2021-12-06 19:30:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 19:30:36,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:36,122 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:36,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 19:30:36,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 19:30:36,323 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 653582896, now seen corresponding path program 8 times [2021-12-06 19:30:36,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:36,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833720577] [2021-12-06 19:30:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:36,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:36,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:36,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833720577] [2021-12-06 19:30:36,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833720577] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:36,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730408782] [2021-12-06 19:30:36,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:30:36,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:36,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:36,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 19:30:36,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:30:36,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:36,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-06 19:30:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:36,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:30:36,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:30:37,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:37,960 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:30:37,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:30:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 66 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:38,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:38,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:38,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 91 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:39,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730408782] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:39,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:39,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 66 [2021-12-06 19:30:39,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864182522] [2021-12-06 19:30:39,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:39,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 19:30:39,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 19:30:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 19:30:39,616 INFO L87 Difference]: Start difference. First operand 168 states and 191 transitions. Second operand has 66 states, 66 states have (on average 3.4545454545454546) internal successors, (228), 66 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:40,616 INFO L93 Difference]: Finished difference Result 257 states and 292 transitions. [2021-12-06 19:30:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 19:30:40,616 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.4545454545454546) internal successors, (228), 66 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 19:30:40,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:40,617 INFO L225 Difference]: With dead ends: 257 [2021-12-06 19:30:40,617 INFO L226 Difference]: Without dead ends: 254 [2021-12-06 19:30:40,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=654, Invalid=7356, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 19:30:40,618 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 217 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:40,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1125 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 791 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2021-12-06 19:30:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-06 19:30:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 200. [2021-12-06 19:30:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.150753768844221) internal successors, (229), 199 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2021-12-06 19:30:40,622 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 78 [2021-12-06 19:30:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2021-12-06 19:30:40,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.4545454545454546) internal successors, (228), 66 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2021-12-06 19:30:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 19:30:40,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:40,623 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:40,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 19:30:40,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:40,824 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1524452150, now seen corresponding path program 9 times [2021-12-06 19:30:40,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:40,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758892710] [2021-12-06 19:30:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:40,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 31 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:41,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:41,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758892710] [2021-12-06 19:30:41,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758892710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:41,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543989421] [2021-12-06 19:30:41,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:30:41,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:41,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:41,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:41,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 19:30:41,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 19:30:41,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:41,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 19:30:41,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:41,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:41,481 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:30:41,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:30:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:41,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:41,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:41,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:41,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543989421] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:41,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:41,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 41 [2021-12-06 19:30:41,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852391714] [2021-12-06 19:30:41,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:41,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 19:30:41,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:41,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 19:30:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 19:30:41,746 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 41 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:42,440 INFO L93 Difference]: Finished difference Result 248 states and 281 transitions. [2021-12-06 19:30:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 19:30:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 19:30:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:42,441 INFO L225 Difference]: With dead ends: 248 [2021-12-06 19:30:42,441 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 19:30:42,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=375, Invalid=3785, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 19:30:42,441 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 265 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:42,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 900 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1257 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2021-12-06 19:30:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 19:30:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2021-12-06 19:30:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2021-12-06 19:30:42,444 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 78 [2021-12-06 19:30:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:42,444 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2021-12-06 19:30:42,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 41 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2021-12-06 19:30:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 19:30:42,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:42,445 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:42,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 19:30:42,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:42,646 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2135505677, now seen corresponding path program 10 times [2021-12-06 19:30:42,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:42,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778514941] [2021-12-06 19:30:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:42,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 66 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:42,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778514941] [2021-12-06 19:30:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778514941] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110828366] [2021-12-06 19:30:42,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:30:42,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:42,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:42,859 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:42,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 19:30:42,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:30:42,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:42,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 19:30:42,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 91 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:43,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:43,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 91 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:43,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110828366] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:43,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:43,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 42 [2021-12-06 19:30:43,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648952263] [2021-12-06 19:30:43,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:43,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 19:30:43,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 19:30:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 19:30:43,563 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:44,094 INFO L93 Difference]: Finished difference Result 188 states and 214 transitions. [2021-12-06 19:30:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:30:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-06 19:30:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:44,095 INFO L225 Difference]: With dead ends: 188 [2021-12-06 19:30:44,095 INFO L226 Difference]: Without dead ends: 188 [2021-12-06 19:30:44,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=681, Invalid=2979, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 19:30:44,096 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1034 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:44,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 576 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:30:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-06 19:30:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2021-12-06 19:30:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.132867132867133) internal successors, (162), 143 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 162 transitions. [2021-12-06 19:30:44,098 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 162 transitions. Word has length 82 [2021-12-06 19:30:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:44,098 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 162 transitions. [2021-12-06 19:30:44,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 162 transitions. [2021-12-06 19:30:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 19:30:44,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:44,099 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:44,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 19:30:44,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 19:30:44,300 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1292013839, now seen corresponding path program 11 times [2021-12-06 19:30:44,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354303716] [2021-12-06 19:30:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:44,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 33 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:44,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:44,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354303716] [2021-12-06 19:30:44,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354303716] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:44,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243761330] [2021-12-06 19:30:44,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:44,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:44,603 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:44,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 19:30:44,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 19:30:44,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:44,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 19:30:44,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:44,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:45,003 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:45,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:45,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 33 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:45,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:45,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:45,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 33 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:45,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243761330] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:45,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:45,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 43 [2021-12-06 19:30:45,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106428057] [2021-12-06 19:30:45,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:45,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 19:30:45,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:45,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 19:30:45,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1688, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 19:30:45,296 INFO L87 Difference]: Start difference. First operand 144 states and 162 transitions. Second operand has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:46,247 INFO L93 Difference]: Finished difference Result 288 states and 325 transitions. [2021-12-06 19:30:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:30:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-12-06 19:30:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:46,248 INFO L225 Difference]: With dead ends: 288 [2021-12-06 19:30:46,248 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 19:30:46,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=431, Invalid=4681, Unknown=0, NotChecked=0, Total=5112 [2021-12-06 19:30:46,249 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 359 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:46,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1285 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1817 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2021-12-06 19:30:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 19:30:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2021-12-06 19:30:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.129251700680272) internal successors, (166), 147 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 166 transitions. [2021-12-06 19:30:46,251 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 166 transitions. Word has length 87 [2021-12-06 19:30:46,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:46,252 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 166 transitions. [2021-12-06 19:30:46,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 166 transitions. [2021-12-06 19:30:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:30:46,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:46,252 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:46,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 19:30:46,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:46,454 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1141261326, now seen corresponding path program 12 times [2021-12-06 19:30:46,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:46,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874675346] [2021-12-06 19:30:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:46,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 91 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:46,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874675346] [2021-12-06 19:30:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874675346] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113188576] [2021-12-06 19:30:46,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:30:46,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:46,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:46,732 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:46,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 19:30:46,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-12-06 19:30:46,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:46,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 19:30:46,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 120 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:47,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:47,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:30:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 120 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:47,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113188576] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:47,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:47,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 65 [2021-12-06 19:30:47,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823342252] [2021-12-06 19:30:47,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:47,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 19:30:47,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 19:30:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=3723, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 19:30:47,914 INFO L87 Difference]: Start difference. First operand 148 states and 166 transitions. Second operand has 66 states, 65 states have (on average 4.107692307692307) internal successors, (267), 66 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:48,406 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2021-12-06 19:30:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:30:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 4.107692307692307) internal successors, (267), 66 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 19:30:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:48,407 INFO L225 Difference]: With dead ends: 172 [2021-12-06 19:30:48,407 INFO L226 Difference]: Without dead ends: 172 [2021-12-06 19:30:48,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1122, Invalid=4884, Unknown=0, NotChecked=0, Total=6006 [2021-12-06 19:30:48,408 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 1075 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:48,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 584 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:30:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-06 19:30:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 160. [2021-12-06 19:30:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1320754716981132) internal successors, (180), 159 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 180 transitions. [2021-12-06 19:30:48,410 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 180 transitions. Word has length 91 [2021-12-06 19:30:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:48,411 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 180 transitions. [2021-12-06 19:30:48,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 4.107692307692307) internal successors, (267), 66 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 180 transitions. [2021-12-06 19:30:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 19:30:48,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:48,411 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:48,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 19:30:48,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:48,613 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1881316406, now seen corresponding path program 13 times [2021-12-06 19:30:48,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:48,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743060394] [2021-12-06 19:30:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:48,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 37 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:48,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743060394] [2021-12-06 19:30:48,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743060394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254533662] [2021-12-06 19:30:48,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:30:48,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:48,917 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:48,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 19:30:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:48,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 19:30:48,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:49,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:49,280 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:49,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:49,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 37 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:49,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:49,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:49,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 37 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:49,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254533662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:49,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:49,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2021-12-06 19:30:49,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617117259] [2021-12-06 19:30:49,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:49,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 19:30:49,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 19:30:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1773, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 19:30:49,616 INFO L87 Difference]: Start difference. First operand 160 states and 180 transitions. Second operand has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:50,800 INFO L93 Difference]: Finished difference Result 322 states and 364 transitions. [2021-12-06 19:30:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 19:30:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-06 19:30:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:50,801 INFO L225 Difference]: With dead ends: 322 [2021-12-06 19:30:50,801 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 19:30:50,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 171 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=460, Invalid=5240, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 19:30:50,801 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 582 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1496 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:30:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 19:30:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-12-06 19:30:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.1288343558282208) internal successors, (184), 163 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 184 transitions. [2021-12-06 19:30:50,804 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 184 transitions. Word has length 96 [2021-12-06 19:30:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:50,804 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 184 transitions. [2021-12-06 19:30:50,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 184 transitions. [2021-12-06 19:30:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 19:30:50,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:50,805 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:50,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 19:30:51,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 19:30:51,005 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1334523833, now seen corresponding path program 14 times [2021-12-06 19:30:51,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786362404] [2021-12-06 19:30:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:51,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 120 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:51,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:51,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786362404] [2021-12-06 19:30:51,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786362404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:51,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422703157] [2021-12-06 19:30:51,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:30:51,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:51,255 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:51,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 19:30:51,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:30:51,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:51,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 19:30:51,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:51,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:51,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:51,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422703157] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:51,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:51,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 51 [2021-12-06 19:30:51,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537882339] [2021-12-06 19:30:51,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 19:30:51,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 19:30:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=2323, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:30:51,971 INFO L87 Difference]: Start difference. First operand 164 states and 184 transitions. Second operand has 52 states, 51 states have (on average 4.03921568627451) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:52,501 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2021-12-06 19:30:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:30:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.03921568627451) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-06 19:30:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:52,502 INFO L225 Difference]: With dead ends: 188 [2021-12-06 19:30:52,502 INFO L226 Difference]: Without dead ends: 188 [2021-12-06 19:30:52,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=771, Invalid=3389, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 19:30:52,502 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 730 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:52,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 925 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:30:52,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-06 19:30:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 176. [2021-12-06 19:30:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.1314285714285715) internal successors, (198), 175 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 198 transitions. [2021-12-06 19:30:52,505 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 198 transitions. Word has length 100 [2021-12-06 19:30:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:52,506 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 198 transitions. [2021-12-06 19:30:52,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.03921568627451) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 198 transitions. [2021-12-06 19:30:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 19:30:52,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:52,506 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:52,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-06 19:30:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 19:30:52,708 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash -997573781, now seen corresponding path program 15 times [2021-12-06 19:30:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175303591] [2021-12-06 19:30:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:52,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 41 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:53,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:53,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175303591] [2021-12-06 19:30:53,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175303591] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:53,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122341128] [2021-12-06 19:30:53,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:30:53,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:53,062 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:53,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 19:30:53,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-12-06 19:30:53,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:53,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-06 19:30:53,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:53,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:53,551 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:53,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:53,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 41 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:53,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:53,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:53,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 41 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:53,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122341128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:53,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:53,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 47 [2021-12-06 19:30:53,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911654745] [2021-12-06 19:30:53,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:53,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 19:30:53,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 19:30:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2036, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 19:30:53,869 INFO L87 Difference]: Start difference. First operand 176 states and 198 transitions. Second operand has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:55,149 INFO L93 Difference]: Finished difference Result 356 states and 403 transitions. [2021-12-06 19:30:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-06 19:30:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-06 19:30:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:55,150 INFO L225 Difference]: With dead ends: 356 [2021-12-06 19:30:55,150 INFO L226 Difference]: Without dead ends: 183 [2021-12-06 19:30:55,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=497, Invalid=6145, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 19:30:55,151 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 590 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:55,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 1423 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:30:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-06 19:30:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-12-06 19:30:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1284916201117319) internal successors, (202), 179 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2021-12-06 19:30:55,155 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 105 [2021-12-06 19:30:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:55,156 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2021-12-06 19:30:55,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2021-12-06 19:30:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 19:30:55,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:55,157 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:55,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-06 19:30:55,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 19:30:55,358 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 859104072, now seen corresponding path program 16 times [2021-12-06 19:30:55,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570125946] [2021-12-06 19:30:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:55,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 153 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:55,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:55,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570125946] [2021-12-06 19:30:55,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570125946] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139757749] [2021-12-06 19:30:55,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:30:55,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:55,710 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 19:30:55,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:30:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 19:30:55,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 190 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:56,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:56,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:30:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 190 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:56,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139757749] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:56,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:56,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 55 [2021-12-06 19:30:56,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415691359] [2021-12-06 19:30:56,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:56,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 19:30:56,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 19:30:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=2700, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:30:56,616 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand has 56 states, 55 states have (on average 4.072727272727272) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:57,211 INFO L93 Difference]: Finished difference Result 204 states and 230 transitions. [2021-12-06 19:30:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:30:57,211 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.072727272727272) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 19:30:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:57,212 INFO L225 Difference]: With dead ends: 204 [2021-12-06 19:30:57,212 INFO L226 Difference]: Without dead ends: 204 [2021-12-06 19:30:57,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=891, Invalid=3939, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:30:57,213 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 722 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:57,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 1073 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:30:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-06 19:30:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-12-06 19:30:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.130890052356021) internal successors, (216), 191 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 216 transitions. [2021-12-06 19:30:57,216 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 216 transitions. Word has length 109 [2021-12-06 19:30:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 216 transitions. [2021-12-06 19:30:57,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.072727272727272) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 216 transitions. [2021-12-06 19:30:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 19:30:57,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:57,217 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:57,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-06 19:30:57,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 19:30:57,417 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:30:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2093452996, now seen corresponding path program 17 times [2021-12-06 19:30:57,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542386929] [2021-12-06 19:30:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:57,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 45 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:57,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:57,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542386929] [2021-12-06 19:30:57,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542386929] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:30:57,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993899142] [2021-12-06 19:30:57,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:30:57,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:30:57,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:30:57,771 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:30:57,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 19:30:57,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-06 19:30:57,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:30:57,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 19:30:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:30:58,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:30:58,328 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:30:58,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:30:58,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:30:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 45 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:58,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:30:58,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:30:58,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:30:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 45 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993899142] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:30:58,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:30:58,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 50 [2021-12-06 19:30:58,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710342150] [2021-12-06 19:30:58,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:30:58,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-06 19:30:58,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-06 19:30:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2317, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 19:30:58,701 INFO L87 Difference]: Start difference. First operand 192 states and 216 transitions. Second operand has 50 states, 50 states have (on average 3.66) internal successors, (183), 50 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:30:59,839 INFO L93 Difference]: Finished difference Result 333 states and 377 transitions. [2021-12-06 19:30:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 19:30:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 50 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-06 19:30:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:30:59,840 INFO L225 Difference]: With dead ends: 333 [2021-12-06 19:30:59,840 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 19:30:59,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 205 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=364, Invalid=5488, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 19:30:59,841 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 281 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:30:59,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 1928 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2697 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2021-12-06 19:30:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 19:30:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-12-06 19:30:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.1282051282051282) internal successors, (220), 195 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2021-12-06 19:30:59,844 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 114 [2021-12-06 19:30:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:30:59,844 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2021-12-06 19:30:59,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 50 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2021-12-06 19:30:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 19:30:59,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:30:59,845 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:30:59,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 19:31:00,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 19:31:00,046 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1073720833, now seen corresponding path program 18 times [2021-12-06 19:31:00,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:00,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166293029] [2021-12-06 19:31:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:00,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 190 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:00,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:00,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166293029] [2021-12-06 19:31:00,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166293029] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:00,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662331235] [2021-12-06 19:31:00,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:31:00,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:00,402 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:00,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 19:31:00,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-06 19:31:00,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:00,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 19:31:00,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 231 proven. 387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:01,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:01,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 19:31:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 276 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662331235] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:02,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:02,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 83 [2021-12-06 19:31:02,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587224055] [2021-12-06 19:31:02,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:02,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-12-06 19:31:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-12-06 19:31:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=6012, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 19:31:02,373 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand has 84 states, 83 states have (on average 4.192771084337349) internal successors, (348), 84 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:03,109 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2021-12-06 19:31:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:31:03,110 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 4.192771084337349) internal successors, (348), 84 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 19:31:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:03,111 INFO L225 Difference]: With dead ends: 220 [2021-12-06 19:31:03,111 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 19:31:03,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2924 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1836, Invalid=7866, Unknown=0, NotChecked=0, Total=9702 [2021-12-06 19:31:03,111 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 868 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:03,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 981 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:31:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 19:31:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2021-12-06 19:31:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.1304347826086956) internal successors, (234), 207 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2021-12-06 19:31:03,114 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 118 [2021-12-06 19:31:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:03,115 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2021-12-06 19:31:03,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 4.192771084337349) internal successors, (348), 84 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2021-12-06 19:31:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 19:31:03,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:03,115 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:03,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 19:31:03,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 19:31:03,317 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:03,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash 715693285, now seen corresponding path program 19 times [2021-12-06 19:31:03,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:03,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617692507] [2021-12-06 19:31:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:03,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 49 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:03,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617692507] [2021-12-06 19:31:03,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617692507] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834853854] [2021-12-06 19:31:03,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:31:03,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:03,764 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:03,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 19:31:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:03,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-06 19:31:03,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:04,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:04,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:31:04,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:05,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:05,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:31:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 231 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:05,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:06,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:06,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:06,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-06 19:31:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 231 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:07,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834853854] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:07,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:07,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 81 [2021-12-06 19:31:07,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230936744] [2021-12-06 19:31:07,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:07,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-12-06 19:31:07,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-12-06 19:31:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=6014, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 19:31:07,061 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:09,745 INFO L93 Difference]: Finished difference Result 425 states and 485 transitions. [2021-12-06 19:31:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-06 19:31:09,745 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 19:31:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:09,747 INFO L225 Difference]: With dead ends: 425 [2021-12-06 19:31:09,747 INFO L226 Difference]: Without dead ends: 419 [2021-12-06 19:31:09,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=767, Invalid=9333, Unknown=0, NotChecked=0, Total=10100 [2021-12-06 19:31:09,748 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 357 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:09,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2096 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1288 Invalid, 0 Unknown, 214 Unchecked, 0.4s Time] [2021-12-06 19:31:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-06 19:31:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 330. [2021-12-06 19:31:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.1519756838905775) internal successors, (379), 329 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 379 transitions. [2021-12-06 19:31:09,752 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 379 transitions. Word has length 123 [2021-12-06 19:31:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:09,753 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 379 transitions. [2021-12-06 19:31:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 379 transitions. [2021-12-06 19:31:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 19:31:09,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:09,753 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:09,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-06 19:31:09,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-12-06 19:31:09,955 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1812401035, now seen corresponding path program 20 times [2021-12-06 19:31:09,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938078891] [2021-12-06 19:31:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:09,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 49 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:10,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938078891] [2021-12-06 19:31:10,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938078891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275901904] [2021-12-06 19:31:10,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:31:10,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:10,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:10,403 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:10,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 19:31:10,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:31:10,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-06 19:31:10,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:10,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:31:11,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:12,451 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:31:12,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 19:31:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 231 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:12,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:13,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:13,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:13,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-06 19:31:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 231 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:13,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275901904] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:13,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:13,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 81 [2021-12-06 19:31:13,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317817683] [2021-12-06 19:31:13,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:13,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-12-06 19:31:13,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-12-06 19:31:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=6014, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 19:31:13,838 INFO L87 Difference]: Start difference. First operand 330 states and 379 transitions. Second operand has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:18,358 INFO L93 Difference]: Finished difference Result 540 states and 620 transitions. [2021-12-06 19:31:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-06 19:31:18,359 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 19:31:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:18,362 INFO L225 Difference]: With dead ends: 540 [2021-12-06 19:31:18,362 INFO L226 Difference]: Without dead ends: 537 [2021-12-06 19:31:18,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 230 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=767, Invalid=9333, Unknown=0, NotChecked=0, Total=10100 [2021-12-06 19:31:18,363 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 410 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:18,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2017 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1461 Invalid, 0 Unknown, 137 Unchecked, 0.4s Time] [2021-12-06 19:31:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-06 19:31:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 339. [2021-12-06 19:31:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.150887573964497) internal successors, (389), 338 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 389 transitions. [2021-12-06 19:31:18,372 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 389 transitions. Word has length 123 [2021-12-06 19:31:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:18,373 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 389 transitions. [2021-12-06 19:31:18,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 389 transitions. [2021-12-06 19:31:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 19:31:18,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:18,374 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:18,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 19:31:18,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:18,575 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:18,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash 521899301, now seen corresponding path program 21 times [2021-12-06 19:31:18,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:18,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939162649] [2021-12-06 19:31:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:18,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 49 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:18,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939162649] [2021-12-06 19:31:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939162649] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:18,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887977382] [2021-12-06 19:31:18,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:31:18,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:18,999 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:19,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 19:31:19,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-12-06 19:31:19,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:19,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 19:31:19,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:19,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:19,721 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:31:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:31:19,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 49 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:19,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:19,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:19,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 49 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:20,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887977382] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:20,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:20,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 53 [2021-12-06 19:31:20,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704427853] [2021-12-06 19:31:20,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:20,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 19:31:20,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 19:31:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2616, Unknown=0, NotChecked=0, Total=2756 [2021-12-06 19:31:20,057 INFO L87 Difference]: Start difference. First operand 339 states and 389 transitions. Second operand has 53 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 53 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:21,551 INFO L93 Difference]: Finished difference Result 417 states and 476 transitions. [2021-12-06 19:31:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 19:31:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 53 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 19:31:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:21,552 INFO L225 Difference]: With dead ends: 417 [2021-12-06 19:31:21,552 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 19:31:21,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=386, Invalid=6256, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 19:31:21,553 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 304 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:21,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2339 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3274 Invalid, 0 Unknown, 92 Unchecked, 0.8s Time] [2021-12-06 19:31:21,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 19:31:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2021-12-06 19:31:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.1417910447761195) internal successors, (306), 268 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 306 transitions. [2021-12-06 19:31:21,557 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 306 transitions. Word has length 123 [2021-12-06 19:31:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:21,557 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 306 transitions. [2021-12-06 19:31:21,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 53 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 306 transitions. [2021-12-06 19:31:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 19:31:21,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:21,558 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:21,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-06 19:31:21,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:21,759 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:21,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1457465406, now seen corresponding path program 22 times [2021-12-06 19:31:21,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:21,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449023790] [2021-12-06 19:31:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:21,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 231 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:22,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:22,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449023790] [2021-12-06 19:31:22,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449023790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:22,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755332389] [2021-12-06 19:31:22,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:31:22,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:22,130 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:22,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 19:31:22,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:31:22,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:22,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 19:31:22,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 276 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:22,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:23,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:31:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 276 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:23,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755332389] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:23,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:23,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 31] total 63 [2021-12-06 19:31:23,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750780634] [2021-12-06 19:31:23,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:23,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 19:31:23,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 19:31:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=3538, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:31:23,312 INFO L87 Difference]: Start difference. First operand 269 states and 306 transitions. Second operand has 64 states, 63 states have (on average 4.095238095238095) internal successors, (258), 64 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:24,147 INFO L93 Difference]: Finished difference Result 295 states and 336 transitions. [2021-12-06 19:31:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 19:31:24,147 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 4.095238095238095) internal successors, (258), 64 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-12-06 19:31:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:24,148 INFO L225 Difference]: With dead ends: 295 [2021-12-06 19:31:24,148 INFO L226 Difference]: Without dead ends: 295 [2021-12-06 19:31:24,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1158, Invalid=5162, Unknown=0, NotChecked=0, Total=6320 [2021-12-06 19:31:24,149 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 1024 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:24,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1267 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:31:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-06 19:31:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 224. [2021-12-06 19:31:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.1300448430493273) internal successors, (252), 223 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2021-12-06 19:31:24,152 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 127 [2021-12-06 19:31:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:24,153 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2021-12-06 19:31:24,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 4.095238095238095) internal successors, (258), 64 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2021-12-06 19:31:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 19:31:24,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:24,153 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:24,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 19:31:24,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-12-06 19:31:24,355 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1002111298, now seen corresponding path program 23 times [2021-12-06 19:31:24,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:24,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50802549] [2021-12-06 19:31:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:24,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 53 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:24,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:24,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50802549] [2021-12-06 19:31:24,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50802549] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:24,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731916072] [2021-12-06 19:31:24,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:31:24,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:24,855 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:24,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 19:31:25,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-12-06 19:31:25,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:25,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 104 conjunts are in the unsatisfiable core [2021-12-06 19:31:25,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:25,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:25,589 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:31:25,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:25,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 53 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:25,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:25,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:25,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 53 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:26,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731916072] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:26,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:26,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 56 [2021-12-06 19:31:26,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340178502] [2021-12-06 19:31:26,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:26,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 19:31:26,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 19:31:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2933, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:31:26,088 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 56 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:28,325 INFO L93 Difference]: Finished difference Result 458 states and 520 transitions. [2021-12-06 19:31:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-06 19:31:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 56 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-12-06 19:31:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:28,327 INFO L225 Difference]: With dead ends: 458 [2021-12-06 19:31:28,327 INFO L226 Difference]: Without dead ends: 231 [2021-12-06 19:31:28,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 239 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=608, Invalid=9292, Unknown=0, NotChecked=0, Total=9900 [2021-12-06 19:31:28,328 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 764 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 3565 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 3565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:28,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2537 Invalid, 3880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 3565 Invalid, 0 Unknown, 52 Unchecked, 1.1s Time] [2021-12-06 19:31:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-06 19:31:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-12-06 19:31:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.1277533039647578) internal successors, (256), 227 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 256 transitions. [2021-12-06 19:31:28,331 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 256 transitions. Word has length 132 [2021-12-06 19:31:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:28,331 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 256 transitions. [2021-12-06 19:31:28,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 56 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 256 transitions. [2021-12-06 19:31:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 19:31:28,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:28,332 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:28,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 19:31:28,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 19:31:28,533 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 856905541, now seen corresponding path program 24 times [2021-12-06 19:31:28,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:28,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134968925] [2021-12-06 19:31:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:28,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 276 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:28,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:28,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134968925] [2021-12-06 19:31:28,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134968925] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:28,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724528058] [2021-12-06 19:31:28,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:31:28,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:28,970 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:28,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 19:31:29,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-12-06 19:31:29,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:29,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-06 19:31:29,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:29,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:31:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 325 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:30,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 378 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:31,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724528058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:31,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:31,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2021-12-06 19:31:31,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70139023] [2021-12-06 19:31:31,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:31,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-12-06 19:31:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-12-06 19:31:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1266, Invalid=7664, Unknown=0, NotChecked=0, Total=8930 [2021-12-06 19:31:31,641 INFO L87 Difference]: Start difference. First operand 228 states and 256 transitions. Second operand has 95 states, 94 states have (on average 4.276595744680851) internal successors, (402), 95 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:32,561 INFO L93 Difference]: Finished difference Result 252 states and 284 transitions. [2021-12-06 19:31:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:31:32,562 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 4.276595744680851) internal successors, (402), 95 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-12-06 19:31:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:32,563 INFO L225 Difference]: With dead ends: 252 [2021-12-06 19:31:32,563 INFO L226 Difference]: Without dead ends: 252 [2021-12-06 19:31:32,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3778 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2379, Invalid=10053, Unknown=0, NotChecked=0, Total=12432 [2021-12-06 19:31:32,564 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 1049 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:32,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 975 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:31:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-06 19:31:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 240. [2021-12-06 19:31:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.1297071129707112) internal successors, (270), 239 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 270 transitions. [2021-12-06 19:31:32,567 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 270 transitions. Word has length 136 [2021-12-06 19:31:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:32,567 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 270 transitions. [2021-12-06 19:31:32,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 4.276595744680851) internal successors, (402), 95 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 270 transitions. [2021-12-06 19:31:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 19:31:32,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:32,568 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:32,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-06 19:31:32,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-06 19:31:32,769 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1423707297, now seen corresponding path program 25 times [2021-12-06 19:31:32,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259246517] [2021-12-06 19:31:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:32,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 57 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:33,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259246517] [2021-12-06 19:31:33,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259246517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33328523] [2021-12-06 19:31:33,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:31:33,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:33,359 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:33,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 19:31:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:33,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 19:31:33,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:33,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:34,002 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:31:34,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:34,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 57 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:34,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:34,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:34,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 57 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:34,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33328523] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:34,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:34,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 61 [2021-12-06 19:31:34,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046279544] [2021-12-06 19:31:34,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:34,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 19:31:34,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 19:31:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3500, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 19:31:34,540 INFO L87 Difference]: Start difference. First operand 240 states and 270 transitions. Second operand has 61 states, 61 states have (on average 3.639344262295082) internal successors, (222), 61 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:37,055 INFO L93 Difference]: Finished difference Result 492 states and 559 transitions. [2021-12-06 19:31:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-06 19:31:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.639344262295082) internal successors, (222), 61 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-06 19:31:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:37,057 INFO L225 Difference]: With dead ends: 492 [2021-12-06 19:31:37,057 INFO L226 Difference]: Without dead ends: 247 [2021-12-06 19:31:37,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 256 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=653, Invalid=10903, Unknown=0, NotChecked=0, Total=11556 [2021-12-06 19:31:37,058 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 760 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:37,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 3038 Invalid, 4646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:31:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-06 19:31:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2021-12-06 19:31:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.1275720164609053) internal successors, (274), 243 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2021-12-06 19:31:37,061 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 141 [2021-12-06 19:31:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:37,061 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2021-12-06 19:31:37,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.639344262295082) internal successors, (222), 61 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2021-12-06 19:31:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 19:31:37,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:37,062 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:37,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 19:31:37,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:37,263 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash -5721924, now seen corresponding path program 26 times [2021-12-06 19:31:37,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344381917] [2021-12-06 19:31:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:37,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 325 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:37,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344381917] [2021-12-06 19:31:37,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344381917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809481159] [2021-12-06 19:31:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:31:37,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:37,789 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:37,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 19:31:37,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:31:37,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:37,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-06 19:31:37,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:37,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:31:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 378 proven. 597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:39,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 435 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809481159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:40,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:40,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 34] total 98 [2021-12-06 19:31:40,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313781778] [2021-12-06 19:31:40,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:40,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-12-06 19:31:40,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-12-06 19:31:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=8642, Unknown=0, NotChecked=0, Total=9702 [2021-12-06 19:31:40,954 INFO L87 Difference]: Start difference. First operand 244 states and 274 transitions. Second operand has 99 states, 98 states have (on average 4.326530612244898) internal successors, (424), 99 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:42,702 INFO L93 Difference]: Finished difference Result 268 states and 302 transitions. [2021-12-06 19:31:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 19:31:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 4.326530612244898) internal successors, (424), 99 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-12-06 19:31:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:42,703 INFO L225 Difference]: With dead ends: 268 [2021-12-06 19:31:42,703 INFO L226 Difference]: Without dead ends: 268 [2021-12-06 19:31:42,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4002 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2859, Invalid=14171, Unknown=0, NotChecked=0, Total=17030 [2021-12-06 19:31:42,704 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 1174 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:42,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2081 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:31:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-12-06 19:31:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 256. [2021-12-06 19:31:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1294117647058823) internal successors, (288), 255 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 288 transitions. [2021-12-06 19:31:42,709 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 288 transitions. Word has length 145 [2021-12-06 19:31:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:42,709 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 288 transitions. [2021-12-06 19:31:42,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 4.326530612244898) internal successors, (424), 99 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 288 transitions. [2021-12-06 19:31:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 19:31:42,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:42,711 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:42,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-12-06 19:31:42,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 19:31:42,912 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash 504294472, now seen corresponding path program 27 times [2021-12-06 19:31:42,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229819009] [2021-12-06 19:31:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:42,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 61 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:43,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:43,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229819009] [2021-12-06 19:31:43,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229819009] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:43,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545992735] [2021-12-06 19:31:43,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:31:43,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:43,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:43,536 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:43,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 19:31:44,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-12-06 19:31:44,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-06 19:31:44,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:44,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:44,736 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:31:44,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 61 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:44,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:45,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:45,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 61 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545992735] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:45,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 65 [2021-12-06 19:31:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430136313] [2021-12-06 19:31:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-12-06 19:31:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-12-06 19:31:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3989, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 19:31:45,275 INFO L87 Difference]: Start difference. First operand 256 states and 288 transitions. Second operand has 65 states, 65 states have (on average 3.646153846153846) internal successors, (237), 65 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:48,002 INFO L93 Difference]: Finished difference Result 526 states and 598 transitions. [2021-12-06 19:31:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-06 19:31:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.646153846153846) internal successors, (237), 65 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-12-06 19:31:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:48,004 INFO L225 Difference]: With dead ends: 526 [2021-12-06 19:31:48,004 INFO L226 Difference]: Without dead ends: 263 [2021-12-06 19:31:48,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 272 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=696, Invalid=12414, Unknown=0, NotChecked=0, Total=13110 [2021-12-06 19:31:48,004 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1137 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 5131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:48,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 3368 Invalid, 5131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 4486 Invalid, 0 Unknown, 238 Unchecked, 1.3s Time] [2021-12-06 19:31:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-06 19:31:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2021-12-06 19:31:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.1274131274131274) internal successors, (292), 259 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 292 transitions. [2021-12-06 19:31:48,008 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 292 transitions. Word has length 150 [2021-12-06 19:31:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:48,008 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 292 transitions. [2021-12-06 19:31:48,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.646153846153846) internal successors, (237), 65 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 292 transitions. [2021-12-06 19:31:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 19:31:48,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:48,009 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:48,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-06 19:31:48,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 19:31:48,209 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1791170677, now seen corresponding path program 28 times [2021-12-06 19:31:48,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:48,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243015937] [2021-12-06 19:31:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:48,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 378 proven. 734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:48,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:48,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243015937] [2021-12-06 19:31:48,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243015937] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:48,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572438041] [2021-12-06 19:31:48,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:31:48,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:48,670 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:48,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 19:31:48,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:31:48,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:48,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-06 19:31:48,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 435 proven. 677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:49,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:50,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-12-06 19:31:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 435 proven. 677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:51,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572438041] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:51,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:51,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 36] total 89 [2021-12-06 19:31:51,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634997417] [2021-12-06 19:31:51,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:51,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-12-06 19:31:51,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-12-06 19:31:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=7175, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 19:31:51,077 INFO L87 Difference]: Start difference. First operand 260 states and 292 transitions. Second operand has 90 states, 89 states have (on average 4.269662921348314) internal successors, (380), 90 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:53,098 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2021-12-06 19:31:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 19:31:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 4.269662921348314) internal successors, (380), 90 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-12-06 19:31:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:53,100 INFO L225 Difference]: With dead ends: 284 [2021-12-06 19:31:53,100 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 19:31:53,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2878, Invalid=12374, Unknown=0, NotChecked=0, Total=15252 [2021-12-06 19:31:53,102 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 2066 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:53,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2066 Valid, 1869 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 19:31:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 19:31:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 272. [2021-12-06 19:31:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.1291512915129152) internal successors, (306), 271 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:53,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 306 transitions. [2021-12-06 19:31:53,107 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 306 transitions. Word has length 154 [2021-12-06 19:31:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:53,107 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 306 transitions. [2021-12-06 19:31:53,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 4.269662921348314) internal successors, (380), 90 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 306 transitions. [2021-12-06 19:31:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 19:31:53,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:53,108 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:53,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-12-06 19:31:53,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:53,310 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1810341593, now seen corresponding path program 29 times [2021-12-06 19:31:53,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:53,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883143461] [2021-12-06 19:31:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:53,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 65 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:53,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:53,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883143461] [2021-12-06 19:31:53,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883143461] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:53,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827945813] [2021-12-06 19:31:53,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:31:53,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:53,997 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:53,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 19:31:54,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-12-06 19:31:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:31:54,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-06 19:31:54,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:31:54,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:31:54,909 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:31:54,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:31:55,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:31:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 65 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:55,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:31:55,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:31:55,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:31:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 65 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:55,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827945813] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:31:55,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:31:55,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 65 [2021-12-06 19:31:55,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7662220] [2021-12-06 19:31:55,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:31:55,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-12-06 19:31:55,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-12-06 19:31:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3992, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 19:31:55,446 INFO L87 Difference]: Start difference. First operand 272 states and 306 transitions. Second operand has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:58,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:31:58,288 INFO L93 Difference]: Finished difference Result 560 states and 637 transitions. [2021-12-06 19:31:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-12-06 19:31:58,289 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-12-06 19:31:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:31:58,290 INFO L225 Difference]: With dead ends: 560 [2021-12-06 19:31:58,290 INFO L226 Difference]: Without dead ends: 279 [2021-12-06 19:31:58,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 290 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=719, Invalid=13087, Unknown=0, NotChecked=0, Total=13806 [2021-12-06 19:31:58,291 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 935 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 5225 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 3728 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 5225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:31:58,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 3728 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 5225 Invalid, 0 Unknown, 83 Unchecked, 1.4s Time] [2021-12-06 19:31:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-06 19:31:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2021-12-06 19:31:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.1272727272727272) internal successors, (310), 275 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 310 transitions. [2021-12-06 19:31:58,295 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 310 transitions. Word has length 159 [2021-12-06 19:31:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:31:58,295 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 310 transitions. [2021-12-06 19:31:58,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 310 transitions. [2021-12-06 19:31:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 19:31:58,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:31:58,297 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:31:58,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-06 19:31:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:58,498 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:31:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1468227850, now seen corresponding path program 30 times [2021-12-06 19:31:58,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:58,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194120614] [2021-12-06 19:31:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:58,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 435 proven. 823 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:59,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194120614] [2021-12-06 19:31:59,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194120614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:31:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062586292] [2021-12-06 19:31:59,131 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:31:59,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:31:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:31:59,131 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:31:59,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 19:32:00,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-12-06 19:32:00,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 19:32:00,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:00,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:32:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 496 proven. 762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:01,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 561 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:03,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062586292] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:03,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:03,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2021-12-06 19:32:03,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485444140] [2021-12-06 19:32:03,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:03,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-12-06 19:32:03,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-12-06 19:32:03,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1785, Invalid=10871, Unknown=0, NotChecked=0, Total=12656 [2021-12-06 19:32:03,062 INFO L87 Difference]: Start difference. First operand 276 states and 310 transitions. Second operand has 113 states, 112 states have (on average 4.3125) internal successors, (483), 113 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:04,332 INFO L93 Difference]: Finished difference Result 300 states and 338 transitions. [2021-12-06 19:32:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 19:32:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 4.3125) internal successors, (483), 113 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-12-06 19:32:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:04,333 INFO L225 Difference]: With dead ends: 300 [2021-12-06 19:32:04,333 INFO L226 Difference]: Without dead ends: 300 [2021-12-06 19:32:04,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5482 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3336, Invalid=14220, Unknown=0, NotChecked=0, Total=17556 [2021-12-06 19:32:04,334 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 1736 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:04,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 1435 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:32:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-06 19:32:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 288. [2021-12-06 19:32:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.1289198606271778) internal successors, (324), 287 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 324 transitions. [2021-12-06 19:32:04,338 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 324 transitions. Word has length 163 [2021-12-06 19:32:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:04,338 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 324 transitions. [2021-12-06 19:32:04,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 4.3125) internal successors, (483), 113 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 324 transitions. [2021-12-06 19:32:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-06 19:32:04,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:04,339 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:04,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-06 19:32:04,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:04,539 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:32:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2055679410, now seen corresponding path program 31 times [2021-12-06 19:32:04,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138975361] [2021-12-06 19:32:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:04,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 69 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:05,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138975361] [2021-12-06 19:32:05,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138975361] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848496689] [2021-12-06 19:32:05,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:32:05,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:05,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:05,166 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:05,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 19:32:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 128 conjunts are in the unsatisfiable core [2021-12-06 19:32:05,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:05,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:32:05,935 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-06 19:32:05,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:32:06,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:32:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 69 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:06,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:06,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 19:32:06,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 19:32:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 69 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848496689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:06,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:06,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 68 [2021-12-06 19:32:06,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160426966] [2021-12-06 19:32:06,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:06,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-06 19:32:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-06 19:32:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4381, Unknown=0, NotChecked=0, Total=4556 [2021-12-06 19:32:06,451 INFO L87 Difference]: Start difference. First operand 288 states and 324 transitions. Second operand has 68 states, 68 states have (on average 3.838235294117647) internal successors, (261), 68 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:09,480 INFO L93 Difference]: Finished difference Result 594 states and 676 transitions. [2021-12-06 19:32:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-12-06 19:32:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.838235294117647) internal successors, (261), 68 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-12-06 19:32:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:09,482 INFO L225 Difference]: With dead ends: 594 [2021-12-06 19:32:09,482 INFO L226 Difference]: Without dead ends: 295 [2021-12-06 19:32:09,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 307 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=756, Invalid=14496, Unknown=0, NotChecked=0, Total=15252 [2021-12-06 19:32:09,483 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 734 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 5645 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 6039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 5645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:09,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 4026 Invalid, 6039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 5645 Invalid, 0 Unknown, 130 Unchecked, 1.4s Time] [2021-12-06 19:32:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-06 19:32:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2021-12-06 19:32:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.127147766323024) internal successors, (328), 291 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 328 transitions. [2021-12-06 19:32:09,485 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 328 transitions. Word has length 168 [2021-12-06 19:32:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:09,486 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 328 transitions. [2021-12-06 19:32:09,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.838235294117647) internal successors, (261), 68 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 328 transitions. [2021-12-06 19:32:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 19:32:09,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:09,487 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:09,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-12-06 19:32:09,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:09,688 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:32:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1289069265, now seen corresponding path program 32 times [2021-12-06 19:32:09,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:09,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182187084] [2021-12-06 19:32:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:09,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 496 proven. 917 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:10,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182187084] [2021-12-06 19:32:10,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182187084] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936856288] [2021-12-06 19:32:10,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:32:10,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:10,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:10,264 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:10,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 19:32:10,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:32:10,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:10,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-06 19:32:10,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 561 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:11,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:11,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:32:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 561 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:12,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936856288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:12,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:12,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 41, 41] total 82 [2021-12-06 19:32:12,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117852151] [2021-12-06 19:32:12,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:12,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-06 19:32:12,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-06 19:32:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=6133, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 19:32:12,090 INFO L87 Difference]: Start difference. First operand 292 states and 328 transitions. Second operand has 83 states, 82 states have (on average 4.2682926829268295) internal successors, (350), 83 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:14,237 INFO L93 Difference]: Finished difference Result 316 states and 356 transitions. [2021-12-06 19:32:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:32:14,238 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 4.2682926829268295) internal successors, (350), 83 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-12-06 19:32:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:14,239 INFO L225 Difference]: With dead ends: 316 [2021-12-06 19:32:14,239 INFO L226 Difference]: Without dead ends: 316 [2021-12-06 19:32:14,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2636, Invalid=11884, Unknown=0, NotChecked=0, Total=14520 [2021-12-06 19:32:14,240 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 2174 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:14,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 2476 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:32:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-06 19:32:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 304. [2021-12-06 19:32:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.1287128712871286) internal successors, (342), 303 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 342 transitions. [2021-12-06 19:32:14,243 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 342 transitions. Word has length 172 [2021-12-06 19:32:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:14,243 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 342 transitions. [2021-12-06 19:32:14,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 4.2682926829268295) internal successors, (350), 83 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 342 transitions. [2021-12-06 19:32:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 19:32:14,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:32:14,244 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:14,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-12-06 19:32:14,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-12-06 19:32:14,445 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-06 19:32:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1157562195, now seen corresponding path program 33 times [2021-12-06 19:32:14,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972812286] [2021-12-06 19:32:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:14,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 73 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:15,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972812286] [2021-12-06 19:32:15,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972812286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:32:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298254544] [2021-12-06 19:32:15,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:32:15,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:32:15,243 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:32:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 19:32:16,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-12-06 19:32:16,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:32:16,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-06 19:32:16,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:32:16,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:32:16,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 19:32:16,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:32:16,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 19:32:16,747 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 19:32:16,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2021-12-06 19:32:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 34 proven. 144 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2021-12-06 19:32:16,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:32:17,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 19:32:17,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2021-12-06 19:32:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 18 proven. 160 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2021-12-06 19:32:18,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298254544] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:32:18,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:32:18,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 10, 10] total 62 [2021-12-06 19:32:18,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047105854] [2021-12-06 19:32:18,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:32:18,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-06 19:32:18,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-06 19:32:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3629, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 19:32:18,652 INFO L87 Difference]: Start difference. First operand 304 states and 342 transitions. Second operand has 62 states, 62 states have (on average 3.693548387096774) internal successors, (229), 62 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:21,682 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 17)) 0) (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse1) (= (select .cse2 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse0 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse2 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse1)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse1) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:22,609 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) (+ (- 1) .cse0)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse1 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse1) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse0) (<= .cse2 .cse0) (not (= .cse0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse0) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse0 .cse2)))) is different from false [2021-12-06 19:32:23,329 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (= (select .cse2 (+ 16 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:24,174 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (= (select .cse0 (+ 16 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:25,048 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 15)) 0) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:25,648 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) (+ (- 1) .cse0)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse1 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse1) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse0) (<= .cse2 .cse0) (not (= .cse0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse0) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse0 .cse2)))) is different from false [2021-12-06 19:32:26,341 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 15)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:27,204 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18) (= (select .cse2 (+ 14 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0))) is different from false [2021-12-06 19:32:27,968 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)) (= (select .cse0 (+ 14 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0))) is different from false [2021-12-06 19:32:28,804 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 13)) 0) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:29,571 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 13)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:30,404 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 12)) 0) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:31,161 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 12)) 0) (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:32,016 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 11)) 0) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:32,813 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 11)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:33,673 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 10)) 0) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:34,463 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 10)) 0) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:35,329 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ 9 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse1) (= (select .cse2 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse0 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse2 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse1)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse1) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:36,111 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ 9 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:36,980 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 8)) 0) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:37,771 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 8)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:38,631 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= (select .cse2 (+ 7 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:39,439 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ 7 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:40,298 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 6)) 0) (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse1) (= (select .cse2 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse0 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse2 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse1)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse1) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:41,097 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 6)) 0) (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:41,961 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ 5 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse1 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse2 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:42,757 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ 5 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:43,626 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18) (= (select .cse2 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 4)) 0))) is different from false [2021-12-06 19:32:44,417 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)) (= (select .cse0 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 4)) 0))) is different from false [2021-12-06 19:32:45,289 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ 3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse1) (= (select .cse2 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse0 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse2 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse1)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse1) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:46,112 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ 3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:47,037 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse2 (+ 2 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:47,860 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= (select .cse0 (+ 2 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) 0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:48,740 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse0 (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (< 1 |c_ULTIMATE.start_main_~length1~0#1|) (<= 19 |c_ULTIMATE.start_main_~length1~0#1|) (= |c_ULTIMATE.start_main_~length1~0#1| .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0) (<= |c_ULTIMATE.start_main_~length1~0#1| 19) (= (select .cse2 (+ (- 1) .cse3)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse4 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse4 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse3) (= (select .cse2 .cse5) 0) (<= .cse5 .cse3) (not (= .cse3 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (= (select .cse1 (+ (- 1) |c_ULTIMATE.start_main_~nondetString1~0#1.offset| .cse0)) 0) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse3) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (= |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (< 1 .cse0) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse3 .cse5)) (<= |c_ULTIMATE.start_main_~i~0#1| 18))) is different from false [2021-12-06 19:32:49,461 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse1 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| 1))) (and (= (select .cse0 (+ (- 1) .cse1)) 0) (forall ((v_ArrVal_2216 Int) (|v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| Int)) (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|))) (or (< .cse2 (+ |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 1)) (<= (+ 2 |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) .cse2) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_cstrreplace_~p~0#1.base|) |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| v_ArrVal_2216) |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852|) 0) (< |v_ULTIMATE.start_cstrreplace_~p~0#1.offset_852| 0)))) (< 1 .cse1) (= (select .cse0 .cse3) 0) (<= .cse3 .cse1) (not (= .cse1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|)) (<= |c_ULTIMATE.start_cstrreplace_~p~0#1.offset| .cse1) (<= 1 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (<= 0 |c_ULTIMATE.start_cstrreplace_~p~0#1.offset|) (not (= .cse1 .cse3)))) is different from false [2021-12-06 19:32:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:32:49,507 INFO L93 Difference]: Finished difference Result 830 states and 934 transitions. [2021-12-06 19:32:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2021-12-06 19:32:49,507 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.693548387096774) internal successors, (229), 62 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-06 19:32:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:32:49,507 INFO L225 Difference]: With dead ends: 830 [2021-12-06 19:32:49,507 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 19:32:49,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 369 SyntacticMatches, 19 SemanticMatches, 271 ConstructedPredicates, 35 IntricatePredicates, 0 DeprecatedPredicates, 16926 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=3750, Invalid=52761, Unknown=35, NotChecked=17710, Total=74256 [2021-12-06 19:32:49,513 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 818 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 6917 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 7519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 6917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:32:49,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 3540 Invalid, 7519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 6917 Invalid, 0 Unknown, 265 Unchecked, 2.2s Time] [2021-12-06 19:32:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 19:32:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 19:32:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 19:32:49,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2021-12-06 19:32:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:32:49,513 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 19:32:49,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.693548387096774) internal successors, (229), 62 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 19:32:49,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 19:32:49,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (10 of 11 remaining) [2021-12-06 19:32:49,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (9 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (8 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (7 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (6 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (5 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (4 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (3 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION (2 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION (1 of 11 remaining) [2021-12-06 19:32:49,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2021-12-06 19:32:49,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-12-06 19:32:49,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:32:49,725 INFO L732 BasicCegarLoop]: Path program histogram: [33, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:32:49,730 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:32:49,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:32:49 BoogieIcfgContainer [2021-12-06 19:32:49,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:32:49,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:32:49,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:32:49,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:32:49,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:30:11" (3/4) ... [2021-12-06 19:32:49,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 19:32:49,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 19:32:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 19:32:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 19:32:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 19:32:49,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:32:49,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:32:49,788 INFO L158 Benchmark]: Toolchain (without parser) took 159018.03ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 39.0MB in the beginning and 27.2MB in the end (delta: 11.8MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2021-12-06 19:32:49,788 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 77.6MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:32:49,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.27ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 38.8MB in the beginning and 65.3MB in the end (delta: -26.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:32:49,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.30ms. Allocated memory is still 94.4MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:32:49,788 INFO L158 Benchmark]: Boogie Preprocessor took 18.33ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 62.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:32:49,789 INFO L158 Benchmark]: RCFGBuilder took 233.98ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 50.6MB in the end (delta: 11.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 19:32:49,789 INFO L158 Benchmark]: TraceAbstraction took 158399.29ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 50.2MB in the beginning and 30.3MB in the end (delta: 20.0MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2021-12-06 19:32:49,798 INFO L158 Benchmark]: Witness Printer took 50.74ms. Allocated memory is still 136.3MB. Free memory was 30.3MB in the beginning and 27.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:32:49,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 77.6MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.27ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 38.8MB in the beginning and 65.3MB in the end (delta: -26.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.30ms. Allocated memory is still 94.4MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.33ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 62.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 233.98ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 50.6MB in the end (delta: 11.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 158399.29ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 50.2MB in the beginning and 30.3MB in the end (delta: 20.0MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * Witness Printer took 50.74ms. Allocated memory is still 136.3MB. Free memory was 30.3MB in the beginning and 27.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 158.3s, OverallIterations: 55, TraceHistogramMax: 19, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 77.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26738 SdHoareTripleChecker+Valid, 21.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26738 mSDsluCounter, 56050 SdHoareTripleChecker+Invalid, 18.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2085 IncrementalHoareTripleChecker+Unchecked, 53653 mSDsCounter, 5079 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76647 IncrementalHoareTripleChecker+Invalid, 83811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5079 mSolverCounterUnsat, 2397 mSDtfsCounter, 76647 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10663 GetRequests, 7085 SyntacticMatches, 138 SemanticMatches, 3440 ConstructedPredicates, 35 IntricatePredicates, 37 DeprecatedPredicates, 68539 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=42, InterpolantAutomatonStates: 1748, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 55 MinimizatonAttempts, 919 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 61.7s InterpolantComputationTime, 8316 NumberOfCodeBlocks, 8316 NumberOfCodeBlocksAsserted, 333 NumberOfCheckSat, 12288 ConstructedInterpolants, 527 QuantifiedInterpolants, 120962 SizeOfPredicates, 603 NumberOfNonLiveVariables, 16532 ConjunctsInSsa, 3063 ConjunctsInUnsatCore, 147 InterpolantComputations, 9 PerfectInterpolantSequences, 16481/63368 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 19:32:49,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96957666-3b31-4854-82bf-c86c1d74e283/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE