./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF --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 a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:39:05,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:39:05,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:39:05,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:39:05,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:39:05,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:39:05,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:39:05,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:39:05,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:39:05,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:39:05,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:39:05,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:39:05,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:39:05,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:39:05,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:39:05,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:39:05,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:39:05,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:39:05,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:39:05,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:39:05,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:39:05,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:39:05,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:39:05,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:39:05,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:39:05,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:39:05,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:39:05,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:39:05,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:39:05,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:39:05,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:39:05,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:39:05,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:39:05,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:39:05,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:39:05,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:39:05,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:39:05,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:39:05,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:39:05,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:39:05,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:39:05,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:39:05,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:39:05,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:39:05,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:39:05,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:39:05,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:39:05,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:39:05,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:39:05,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:39:05,969 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:39:05,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:39:05,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:39:05,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:39:05,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:39:05,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:39:05,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:39:05,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:39:05,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:39:05,973 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:39:05,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:39:05,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:39:05,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:39:05,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:39:05,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:39:05,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:39:05,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:39:05,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:39:05,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:39:05,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:39:05,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:39:05,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:39:05,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:39:05,977 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_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-11-20 07:39:06,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:39:06,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:39:06,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:39:06,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:39:06,348 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:39:06,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-20 07:39:06,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/data/0a4c71810/f354e8100b7e4423a885064e175c001f/FLAG7a47d6a4c [2021-11-20 07:39:06,995 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:39:06,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-20 07:39:07,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/data/0a4c71810/f354e8100b7e4423a885064e175c001f/FLAG7a47d6a4c [2021-11-20 07:39:07,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/data/0a4c71810/f354e8100b7e4423a885064e175c001f [2021-11-20 07:39:07,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:39:07,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:39:07,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:39:07,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:39:07,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:39:07,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b8ad56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07, skipping insertion in model container [2021-11-20 07:39:07,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:39:07,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:39:07,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-20 07:39:07,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:39:07,841 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:39:07,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-20 07:39:07,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:39:07,911 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:39:07,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07 WrapperNode [2021-11-20 07:39:07,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:39:07,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:39:07,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:39:07,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:39:07,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,981 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2021-11-20 07:39:07,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:39:07,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:39:07,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:39:07,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:39:07,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:07,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:08,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:08,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:08,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:08,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:39:08,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:39:08,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:39:08,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:39:08,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (1/1) ... [2021-11-20 07:39:08,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:39:08,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:08,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:39:08,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:39:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-20 07:39:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-20 07:39:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:39:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:39:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:39:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:39:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:39:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:39:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:39:08,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:39:08,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:39:08,288 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-20 07:39:08,700 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:39:08,707 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:39:08,707 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:39:08,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:39:08 BoogieIcfgContainer [2021-11-20 07:39:08,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:39:08,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:39:08,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:39:08,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:39:08,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:39:07" (1/3) ... [2021-11-20 07:39:08,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf397e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:39:08, skipping insertion in model container [2021-11-20 07:39:08,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:07" (2/3) ... [2021-11-20 07:39:08,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf397e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:39:08, skipping insertion in model container [2021-11-20 07:39:08,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:39:08" (3/3) ... [2021-11-20 07:39:08,723 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-11-20 07:39:08,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:39:08,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-11-20 07:39:08,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:39:08,791 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 [2021-11-20 07:39:08,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-11-20 07:39:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:39:08,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:08,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:39:08,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2021-11-20 07:39:08,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:08,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721694102] [2021-11-20 07:39:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:08,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:09,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:09,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721694102] [2021-11-20 07:39:09,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721694102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:09,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:09,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:39:09,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275429250] [2021-11-20 07:39:09,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:09,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:09,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,110 INFO L87 Difference]: Start difference. First operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:09,361 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2021-11-20 07:39:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:09,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-20 07:39:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:09,376 INFO L225 Difference]: With dead ends: 177 [2021-11-20 07:39:09,376 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 07:39:09,378 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 [2021-11-20 07:39:09,382 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 93 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:09,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 195 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:39:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 07:39:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 93. [2021-11-20 07:39:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 92 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-11-20 07:39:09,427 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 5 [2021-11-20 07:39:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:09,428 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-11-20 07:39:09,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-11-20 07:39:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:39:09,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:09,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:39:09,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:39:09,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2021-11-20 07:39:09,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:09,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369907272] [2021-11-20 07:39:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:09,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:09,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:09,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369907272] [2021-11-20 07:39:09,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369907272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:09,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:09,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:39:09,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203671210] [2021-11-20 07:39:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:09,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:09,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,484 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:09,602 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-11-20 07:39:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:09,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-20 07:39:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:09,604 INFO L225 Difference]: With dead ends: 169 [2021-11-20 07:39:09,604 INFO L226 Difference]: Without dead ends: 169 [2021-11-20 07:39:09,605 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 [2021-11-20 07:39:09,606 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 91 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:09,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 189 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-20 07:39:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 90. [2021-11-20 07:39:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-11-20 07:39:09,624 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 5 [2021-11-20 07:39:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:09,625 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-11-20 07:39:09,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-11-20 07:39:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:39:09,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:09,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:09,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:39:09,629 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2021-11-20 07:39:09,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:09,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763119969] [2021-11-20 07:39:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:09,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:09,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763119969] [2021-11-20 07:39:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763119969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:09,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:09,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:39:09,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643964926] [2021-11-20 07:39:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:09,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:09,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,697 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:09,705 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-11-20 07:39:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:09,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:39:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:09,707 INFO L225 Difference]: With dead ends: 100 [2021-11-20 07:39:09,707 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 07:39:09,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,709 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:09,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 07:39:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2021-11-20 07:39:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 90 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-11-20 07:39:09,717 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 7 [2021-11-20 07:39:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:09,717 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-11-20 07:39:09,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-11-20 07:39:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:39:09,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:09,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:09,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:39:09,719 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2021-11-20 07:39:09,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:09,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60140868] [2021-11-20 07:39:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:09,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:09,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60140868] [2021-11-20 07:39:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60140868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:09,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:09,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:39:09,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27792733] [2021-11-20 07:39:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:09,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:09,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,802 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:09,820 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-11-20 07:39:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:09,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 07:39:09,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:09,822 INFO L225 Difference]: With dead ends: 97 [2021-11-20 07:39:09,822 INFO L226 Difference]: Without dead ends: 97 [2021-11-20 07:39:09,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:39:09,824 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:09,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-20 07:39:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-11-20 07:39:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 95 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) [2021-11-20 07:39:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-11-20 07:39:09,836 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 9 [2021-11-20 07:39:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:09,838 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-11-20 07:39:09,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-11-20 07:39:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:39:09,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:09,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:09,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:39:09,840 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2021-11-20 07:39:09,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556835137] [2021-11-20 07:39:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:09,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:09,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:09,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556835137] [2021-11-20 07:39:09,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556835137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:09,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977910999] [2021-11-20 07:39:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:09,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:09,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:09,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:09,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:39:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:39:09,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:10,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:10,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:10,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977910999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:10,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:10,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-20 07:39:10,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254408784] [2021-11-20 07:39:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:10,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:10,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:10,076 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:10,161 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-11-20 07:39:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-20 07:39:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:10,163 INFO L225 Difference]: With dead ends: 105 [2021-11-20 07:39:10,163 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 07:39:10,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:10,164 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 73 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:10,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 71 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 07:39:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-11-20 07:39:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.736842105263158) internal successors, (99), 92 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-11-20 07:39:10,174 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 14 [2021-11-20 07:39:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:10,174 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-11-20 07:39:10,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-11-20 07:39:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:39:10,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:10,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:10,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:10,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:10,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -763066912, now seen corresponding path program 1 times [2021-11-20 07:39:10,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:10,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233594705] [2021-11-20 07:39:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:10,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:10,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233594705] [2021-11-20 07:39:10,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233594705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204188677] [2021-11-20 07:39:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:10,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:10,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:10,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:39:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:39:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:10,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:10,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204188677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:39:10,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:39:10,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-20 07:39:10,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039005460] [2021-11-20 07:39:10,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:10,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:10,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:10,719 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:10,735 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-11-20 07:39:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:39:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 14 [2021-11-20 07:39:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:10,737 INFO L225 Difference]: With dead ends: 95 [2021-11-20 07:39:10,737 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 07:39:10,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:10,739 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 16 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:10,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 260 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 07:39:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-20 07:39:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 94 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2021-11-20 07:39:10,750 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 14 [2021-11-20 07:39:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:10,751 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2021-11-20 07:39:10,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2021-11-20 07:39:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:39:10,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:10,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:10,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:10,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:10,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2021-11-20 07:39:10,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:10,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11914192] [2021-11-20 07:39:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:10,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:11,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:11,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11914192] [2021-11-20 07:39:11,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11914192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:11,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161939236] [2021-11-20 07:39:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:11,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:11,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:11,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:11,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:39:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:11,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:39:11,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:11,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:11,250 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 07:39:11,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-20 07:39:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:11,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161939236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:39:11,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:39:11,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 07:39:11,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765728375] [2021-11-20 07:39:11,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:11,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:39:11,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:39:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:39:11,604 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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) [2021-11-20 07:39:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:11,776 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2021-11-20 07:39:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:39:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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) Word has length 16 [2021-11-20 07:39:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:11,778 INFO L225 Difference]: With dead ends: 188 [2021-11-20 07:39:11,778 INFO L226 Difference]: Without dead ends: 188 [2021-11-20 07:39:11,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:39:11,781 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 305 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:11,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 284 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2021-11-20 07:39:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-20 07:39:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 103. [2021-11-20 07:39:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.671641791044776) internal successors, (112), 102 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2021-11-20 07:39:11,801 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 16 [2021-11-20 07:39:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:11,801 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2021-11-20 07:39:11,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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) [2021-11-20 07:39:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2021-11-20 07:39:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:39:11,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:11,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:11,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:12,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 07:39:12,026 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2021-11-20 07:39:12,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110170527] [2021-11-20 07:39:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:12,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:12,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110170527] [2021-11-20 07:39:12,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110170527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640268001] [2021-11-20 07:39:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:12,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:12,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:12,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:12,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:39:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:12,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:39:12,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:12,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:12,401 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:39:12,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 [2021-11-20 07:39:12,410 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:39:12,411 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 21 treesize of output 21 [2021-11-20 07:39:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:12,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:12,758 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 40 treesize of output 36 [2021-11-20 07:39:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:12,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640268001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:39:12,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:39:12,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-20 07:39:12,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399428573] [2021-11-20 07:39:12,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:12,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:39:12,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:39:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:39:12,961 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:13,315 INFO L93 Difference]: Finished difference Result 190 states and 203 transitions. [2021-11-20 07:39:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:39:13,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:39:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:13,317 INFO L225 Difference]: With dead ends: 190 [2021-11-20 07:39:13,317 INFO L226 Difference]: Without dead ends: 190 [2021-11-20 07:39:13,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:39:13,318 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 278 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:13,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 349 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 242 Invalid, 0 Unknown, 321 Unchecked, 0.2s Time] [2021-11-20 07:39:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-20 07:39:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 103. [2021-11-20 07:39:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.6567164179104477) internal successors, (111), 102 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2021-11-20 07:39:13,323 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 16 [2021-11-20 07:39:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:13,324 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2021-11-20 07:39:13,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,324 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2021-11-20 07:39:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 07:39:13,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:13,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:13,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-20 07:39:13,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 07:39:13,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 2 times [2021-11-20 07:39:13,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:13,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505138326] [2021-11-20 07:39:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:13,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:13,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:13,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505138326] [2021-11-20 07:39:13,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505138326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:13,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453474025] [2021-11-20 07:39:13,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:39:13,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:13,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:13,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:39:13,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:39:13,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:39:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:39:13,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:13,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:13,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:13,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453474025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:13,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:13,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-20 07:39:13,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351816690] [2021-11-20 07:39:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:13,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:39:13,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:39:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:13,710 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:13,760 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2021-11-20 07:39:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:39:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 21 [2021-11-20 07:39:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:13,762 INFO L225 Difference]: With dead ends: 100 [2021-11-20 07:39:13,762 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 07:39:13,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:13,763 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:13,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 66 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 07:39:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-20 07:39:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.6119402985074627) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2021-11-20 07:39:13,768 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 21 [2021-11-20 07:39:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:13,768 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2021-11-20 07:39:13,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2021-11-20 07:39:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 07:39:13,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:13,770 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-20 07:39:13,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:13,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:13,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1749725711, now seen corresponding path program 1 times [2021-11-20 07:39:13,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:13,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864916587] [2021-11-20 07:39:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:14,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864916587] [2021-11-20 07:39:14,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864916587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020867866] [2021-11-20 07:39:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:14,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:14,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:14,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:14,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:39:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:39:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:14,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:14,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020867866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:14,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:14,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-20 07:39:14,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095474669] [2021-11-20 07:39:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:14,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:14,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:39:14,194 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:14,214 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-11-20 07:39:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:39:14,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2021-11-20 07:39:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:14,216 INFO L225 Difference]: With dead ends: 92 [2021-11-20 07:39:14,216 INFO L226 Difference]: Without dead ends: 92 [2021-11-20 07:39:14,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:39:14,217 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 80 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:14,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 109 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-20 07:39:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-11-20 07:39:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.6101694915254237) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-11-20 07:39:14,222 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 24 [2021-11-20 07:39:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:14,223 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-11-20 07:39:14,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-11-20 07:39:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 07:39:14,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:14,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:14,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:14,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:39:14,438 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1087183919, now seen corresponding path program 1 times [2021-11-20 07:39:14,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:14,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000179819] [2021-11-20 07:39:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:14,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:14,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000179819] [2021-11-20 07:39:14,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000179819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108646141] [2021-11-20 07:39:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:14,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:14,514 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:14,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:39:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:14,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:39:14,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:14,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:14,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108646141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:39:14,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:39:14,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-11-20 07:39:14,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681307802] [2021-11-20 07:39:14,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:39:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:39:14,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:39:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:39:14,710 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:14,745 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-11-20 07:39:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:39:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-20 07:39:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:14,749 INFO L225 Difference]: With dead ends: 90 [2021-11-20 07:39:14,749 INFO L226 Difference]: Without dead ends: 90 [2021-11-20 07:39:14,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:14,751 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 159 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:14,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 84 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-20 07:39:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-20 07:39:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-11-20 07:39:14,756 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 26 [2021-11-20 07:39:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:14,757 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-11-20 07:39:14,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-11-20 07:39:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:39:14,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:14,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:14,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:14,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:14,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2021-11-20 07:39:14,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:14,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106943263] [2021-11-20 07:39:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:14,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:15,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:15,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106943263] [2021-11-20 07:39:15,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106943263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043268658] [2021-11-20 07:39:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:15,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:15,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:15,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:39:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:15,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:39:15,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:15,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:15,236 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:39:15,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 17 [2021-11-20 07:39:15,416 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 07:39:15,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 32 [2021-11-20 07:39:15,602 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 07:39:15,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 27 [2021-11-20 07:39:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:15,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:39:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:33,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043268658] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:33,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:39:33,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2021-11-20 07:39:33,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715190882] [2021-11-20 07:39:33,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:33,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:33,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=89, Unknown=4, NotChecked=0, Total=132 [2021-11-20 07:39:33,787 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:33,867 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2021-11-20 07:39:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:39:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-20 07:39:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:33,868 INFO L225 Difference]: With dead ends: 98 [2021-11-20 07:39:33,868 INFO L226 Difference]: Without dead ends: 98 [2021-11-20 07:39:33,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=39, Invalid=89, Unknown=4, NotChecked=0, Total=132 [2021-11-20 07:39:33,869 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 66 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:33,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 93 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2021-11-20 07:39:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-20 07:39:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-11-20 07:39:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 85 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) [2021-11-20 07:39:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-11-20 07:39:33,873 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 27 [2021-11-20 07:39:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:33,873 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-11-20 07:39:33,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-11-20 07:39:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:39:33,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:33,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:33,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:34,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:34,094 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2021-11-20 07:39:34,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:34,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831444587] [2021-11-20 07:39:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:34,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 07:39:34,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831444587] [2021-11-20 07:39:34,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831444587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:34,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268297423] [2021-11-20 07:39:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:34,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:34,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:34,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:39:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:34,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 07:39:34,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:34,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:34,425 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:39:34,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 17 [2021-11-20 07:39:34,640 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 07:39:34,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-11-20 07:39:34,875 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 07:39:34,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 32 [2021-11-20 07:39:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 07:39:35,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:39:35,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268297423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:35,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:39:35,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-20 07:39:35,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770047990] [2021-11-20 07:39:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:35,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:35,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:39:35,019 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:35,062 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-11-20 07:39:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:39:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 27 [2021-11-20 07:39:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:35,064 INFO L225 Difference]: With dead ends: 85 [2021-11-20 07:39:35,064 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:39:35,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:39:35,065 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:35,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 153 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2021-11-20 07:39:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:39:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-20 07:39:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-11-20 07:39:35,069 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 27 [2021-11-20 07:39:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:35,071 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-11-20 07:39:35,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-11-20 07:39:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:39:35,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:35,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:35,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:39:35,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:35,298 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash 579705555, now seen corresponding path program 1 times [2021-11-20 07:39:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:35,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379513054] [2021-11-20 07:39:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:35,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:35,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:35,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379513054] [2021-11-20 07:39:35,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379513054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:35,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:35,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:39:35,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523508150] [2021-11-20 07:39:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:35,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:35,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:35,379 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:35,479 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-11-20 07:39:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:39:35,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-11-20 07:39:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:35,480 INFO L225 Difference]: With dead ends: 96 [2021-11-20 07:39:35,480 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 07:39:35,481 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 [2021-11-20 07:39:35,482 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 180 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:35,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 93 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 07:39:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2021-11-20 07:39:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-11-20 07:39:35,488 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 28 [2021-11-20 07:39:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:35,489 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-11-20 07:39:35,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-11-20 07:39:35,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:39:35,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:35,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:35,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:39:35,493 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 579705556, now seen corresponding path program 1 times [2021-11-20 07:39:35,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:35,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046936] [2021-11-20 07:39:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:35,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:35,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046936] [2021-11-20 07:39:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:35,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:35,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:39:35,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056332853] [2021-11-20 07:39:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:35,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:35,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:35,567 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:35,664 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-11-20 07:39:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:39:35,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-11-20 07:39:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:35,666 INFO L225 Difference]: With dead ends: 83 [2021-11-20 07:39:35,666 INFO L226 Difference]: Without dead ends: 83 [2021-11-20 07:39:35,666 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 [2021-11-20 07:39:35,667 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 185 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:35,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 69 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-20 07:39:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-20 07:39:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2021-11-20 07:39:35,670 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 28 [2021-11-20 07:39:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:35,670 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2021-11-20 07:39:35,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2021-11-20 07:39:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 07:39:35,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:35,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:35,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:39:35,671 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1248708715, now seen corresponding path program 1 times [2021-11-20 07:39:35,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292523245] [2021-11-20 07:39:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:35,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:35,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:35,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292523245] [2021-11-20 07:39:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292523245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:35,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:39:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995674727] [2021-11-20 07:39:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:35,731 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:35,792 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-11-20 07:39:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:39:35,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 30 [2021-11-20 07:39:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:35,793 INFO L225 Difference]: With dead ends: 80 [2021-11-20 07:39:35,794 INFO L226 Difference]: Without dead ends: 80 [2021-11-20 07:39:35,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:39:35,795 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 176 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:35,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 74 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:39:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-20 07:39:35,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-20 07:39:35,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.423728813559322) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-11-20 07:39:35,798 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 30 [2021-11-20 07:39:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:35,799 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-11-20 07:39:35,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-11-20 07:39:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:39:35,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:35,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:35,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:39:35,801 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:35,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558015, now seen corresponding path program 1 times [2021-11-20 07:39:35,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523218667] [2021-11-20 07:39:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:35,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 07:39:36,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523218667] [2021-11-20 07:39:36,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523218667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:36,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:36,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:39:36,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194851844] [2021-11-20 07:39:36,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:36,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:39:36,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:39:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:39:36,030 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2021-11-20 07:39:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:36,437 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-11-20 07:39:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:39:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) Word has length 33 [2021-11-20 07:39:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:36,438 INFO L225 Difference]: With dead ends: 92 [2021-11-20 07:39:36,438 INFO L226 Difference]: Without dead ends: 92 [2021-11-20 07:39:36,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:39:36,439 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 289 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:36,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 137 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:39:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-20 07:39:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2021-11-20 07:39:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 78 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) [2021-11-20 07:39:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-20 07:39:36,442 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 33 [2021-11-20 07:39:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:36,443 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-20 07:39:36,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2021-11-20 07:39:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-20 07:39:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:39:36,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:36,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:36,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:39:36,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558014, now seen corresponding path program 1 times [2021-11-20 07:39:36,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:36,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581086767] [2021-11-20 07:39:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:36,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:36,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:36,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581086767] [2021-11-20 07:39:36,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581086767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:36,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:36,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:39:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464247104] [2021-11-20 07:39:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:39:36,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:39:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:39:36,736 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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) [2021-11-20 07:39:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:37,173 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-11-20 07:39:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:39:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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) Word has length 33 [2021-11-20 07:39:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:37,174 INFO L225 Difference]: With dead ends: 79 [2021-11-20 07:39:37,174 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 07:39:37,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:39:37,175 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 203 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:37,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 102 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:39:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 07:39:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-11-20 07:39:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 77 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) [2021-11-20 07:39:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-11-20 07:39:37,179 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 33 [2021-11-20 07:39:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:37,179 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-11-20 07:39:37,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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) [2021-11-20 07:39:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-11-20 07:39:37,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:39:37,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:37,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:37,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 07:39:37,180 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:37,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1411380073, now seen corresponding path program 1 times [2021-11-20 07:39:37,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:37,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405942665] [2021-11-20 07:39:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:37,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:37,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405942665] [2021-11-20 07:39:37,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405942665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:37,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:37,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:39:37,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653134665] [2021-11-20 07:39:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:37,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:39:37,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:39:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:37,236 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2021-11-20 07:39:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:37,302 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2021-11-20 07:39:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:39:37,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) Word has length 34 [2021-11-20 07:39:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:37,303 INFO L225 Difference]: With dead ends: 88 [2021-11-20 07:39:37,304 INFO L226 Difference]: Without dead ends: 88 [2021-11-20 07:39:37,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:39:37,305 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 180 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:37,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 58 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-20 07:39:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-11-20 07:39:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 75 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) [2021-11-20 07:39:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-11-20 07:39:37,309 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 34 [2021-11-20 07:39:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:37,309 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-11-20 07:39:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2021-11-20 07:39:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-11-20 07:39:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:39:37,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:37,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 07:39:37,311 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1411380072, now seen corresponding path program 1 times [2021-11-20 07:39:37,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:37,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990912881] [2021-11-20 07:39:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:37,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:37,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:37,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990912881] [2021-11-20 07:39:37,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990912881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:37,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:37,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:39:37,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213579603] [2021-11-20 07:39:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:37,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:39:37,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:39:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:39:37,411 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 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) [2021-11-20 07:39:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:37,468 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-11-20 07:39:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:39:37,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 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) Word has length 34 [2021-11-20 07:39:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:37,470 INFO L225 Difference]: With dead ends: 74 [2021-11-20 07:39:37,470 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 07:39:37,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:39:37,471 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 122 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:37,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 53 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 07:39:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-20 07:39:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 73 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) [2021-11-20 07:39:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-11-20 07:39:37,474 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 34 [2021-11-20 07:39:37,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:37,475 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-11-20 07:39:37,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 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) [2021-11-20 07:39:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-11-20 07:39:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:39:37,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:37,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:37,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 07:39:37,476 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:37,477 INFO L85 PathProgramCache]: Analyzing trace with hash 873417592, now seen corresponding path program 1 times [2021-11-20 07:39:37,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:37,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031358083] [2021-11-20 07:39:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:37,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:37,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:37,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031358083] [2021-11-20 07:39:37,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031358083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:37,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:37,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:39:37,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232566658] [2021-11-20 07:39:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:37,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:39:37,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:39:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:39:37,597 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2021-11-20 07:39:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:37,786 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-11-20 07:39:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:39:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) Word has length 36 [2021-11-20 07:39:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:37,788 INFO L225 Difference]: With dead ends: 85 [2021-11-20 07:39:37,788 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:39:37,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:39:37,789 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 246 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:37,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 151 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:39:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2021-11-20 07:39:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.271186440677966) internal successors, (75), 70 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) [2021-11-20 07:39:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-20 07:39:37,793 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 36 [2021-11-20 07:39:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:37,793 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-20 07:39:37,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2021-11-20 07:39:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-20 07:39:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:39:37,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:37,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:37,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 07:39:37,794 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 873417593, now seen corresponding path program 1 times [2021-11-20 07:39:37,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610220981] [2021-11-20 07:39:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:37,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:39:37,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610220981] [2021-11-20 07:39:37,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610220981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:37,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:37,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:39:37,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915399932] [2021-11-20 07:39:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:37,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:39:37,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:39:37,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:39:37,923 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-11-20 07:39:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:38,175 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-11-20 07:39:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:39:38,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) Word has length 36 [2021-11-20 07:39:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:38,178 INFO L225 Difference]: With dead ends: 71 [2021-11-20 07:39:38,179 INFO L226 Difference]: Without dead ends: 71 [2021-11-20 07:39:38,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:39:38,180 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 172 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:38,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:39:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-20 07:39:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-11-20 07:39:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 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) [2021-11-20 07:39:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-11-20 07:39:38,183 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 36 [2021-11-20 07:39:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-11-20 07:39:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-11-20 07:39:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-11-20 07:39:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 07:39:38,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:38,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:38,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 07:39:38,184 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1835685655, now seen corresponding path program 1 times [2021-11-20 07:39:38,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:38,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504700363] [2021-11-20 07:39:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:38,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:38,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:38,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504700363] [2021-11-20 07:39:38,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504700363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:38,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:38,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:39:38,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828744114] [2021-11-20 07:39:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:38,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:39:38,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:39:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:39:38,398 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-11-20 07:39:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:38,722 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-11-20 07:39:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:39:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 38 [2021-11-20 07:39:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:38,726 INFO L225 Difference]: With dead ends: 69 [2021-11-20 07:39:38,726 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 07:39:38,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:39:38,732 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 208 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:38,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 178 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:39:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 07:39:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-20 07:39:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-11-20 07:39:38,738 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 38 [2021-11-20 07:39:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-11-20 07:39:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-11-20 07:39:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-11-20 07:39:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-20 07:39:38,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:38,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:38,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 07:39:38,740 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1288796870, now seen corresponding path program 1 times [2021-11-20 07:39:38,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:38,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042872985] [2021-11-20 07:39:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:38,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 07:39:39,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:39,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042872985] [2021-11-20 07:39:39,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042872985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:39,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:39,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 07:39:39,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939627545] [2021-11-20 07:39:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:39,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:39:39,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:39,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:39:39,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:39:39,174 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:39,991 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2021-11-20 07:39:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:39:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 41 [2021-11-20 07:39:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:39,993 INFO L225 Difference]: With dead ends: 81 [2021-11-20 07:39:39,993 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:39:39,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-11-20 07:39:39,995 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 250 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:39,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 242 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:39:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:39:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-11-20 07:39:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2021-11-20 07:39:40,003 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 41 [2021-11-20 07:39:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:40,004 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2021-11-20 07:39:40,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2021-11-20 07:39:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 07:39:40,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:40,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:40,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 07:39:40,005 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035530, now seen corresponding path program 1 times [2021-11-20 07:39:40,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810687756] [2021-11-20 07:39:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:40,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 07:39:40,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810687756] [2021-11-20 07:39:40,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810687756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:40,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:40,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 07:39:40,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580909851] [2021-11-20 07:39:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:40,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:39:40,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:39:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:39:40,469 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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) [2021-11-20 07:39:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:41,502 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-11-20 07:39:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:39:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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) Word has length 44 [2021-11-20 07:39:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:41,503 INFO L225 Difference]: With dead ends: 101 [2021-11-20 07:39:41,503 INFO L226 Difference]: Without dead ends: 101 [2021-11-20 07:39:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 07:39:41,504 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 350 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:41,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 221 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:39:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-20 07:39:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2021-11-20 07:39:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 70 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) [2021-11-20 07:39:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-20 07:39:41,507 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 44 [2021-11-20 07:39:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:41,508 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-20 07:39:41,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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) [2021-11-20 07:39:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-20 07:39:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 07:39:41,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:41,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:41,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 07:39:41,509 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035531, now seen corresponding path program 1 times [2021-11-20 07:39:41,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:41,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999321473] [2021-11-20 07:39:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:41,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:42,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:42,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999321473] [2021-11-20 07:39:42,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999321473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:42,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:42,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 07:39:42,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871677088] [2021-11-20 07:39:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:42,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:39:42,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:39:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:39:42,251 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:44,133 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2021-11-20 07:39:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:39:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-20 07:39:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:44,134 INFO L225 Difference]: With dead ends: 117 [2021-11-20 07:39:44,134 INFO L226 Difference]: Without dead ends: 117 [2021-11-20 07:39:44,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 07:39:44,136 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 469 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:44,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 230 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:39:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-20 07:39:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2021-11-20 07:39:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-11-20 07:39:44,139 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 44 [2021-11-20 07:39:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:44,139 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-11-20 07:39:44,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-11-20 07:39:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:39:44,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:44,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:44,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 07:39:44,141 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1051525325, now seen corresponding path program 1 times [2021-11-20 07:39:44,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:44,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904708959] [2021-11-20 07:39:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:44,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:39:44,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:44,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904708959] [2021-11-20 07:39:44,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904708959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:39:44,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:39:44,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 07:39:44,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647492402] [2021-11-20 07:39:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:39:44,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:39:44,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:39:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:39:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:39:44,661 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:39:45,901 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-11-20 07:39:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:39:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-20 07:39:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:39:45,902 INFO L225 Difference]: With dead ends: 88 [2021-11-20 07:39:45,902 INFO L226 Difference]: Without dead ends: 88 [2021-11-20 07:39:45,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 07:39:45,904 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 299 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:39:45,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 286 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:39:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-20 07:39:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2021-11-20 07:39:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 72 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) [2021-11-20 07:39:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-11-20 07:39:45,907 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 45 [2021-11-20 07:39:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:39:45,907 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-11-20 07:39:45,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:39:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-11-20 07:39:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 07:39:45,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:39:45,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:39:45,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 07:39:45,909 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:39:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:39:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1460157775, now seen corresponding path program 1 times [2021-11-20 07:39:45,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:39:45,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910953667] [2021-11-20 07:39:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:45,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:39:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:46,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:39:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910953667] [2021-11-20 07:39:46,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910953667] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:39:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542245819] [2021-11-20 07:39:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:39:46,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:39:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:39:46,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:39:46,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:39:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:39:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-20 07:39:47,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:39:47,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:47,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:39:47,152 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:39:47,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-11-20 07:39:47,188 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 07:39:47,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-20 07:39:47,566 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 07:39:47,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-20 07:39:47,607 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 07:39:47,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-20 07:39:47,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:39:47,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:47,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 07:39:48,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 07:39:48,100 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-20 07:39:48,101 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 41 treesize of output 25 [2021-11-20 07:39:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,576 INFO L354 Elim1Store]: treesize reduction 40, result has 24.5 percent of original size [2021-11-20 07:39:48,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 58 [2021-11-20 07:39:48,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,607 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 07:39:48,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 07:39:48,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,836 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 [2021-11-20 07:39:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,849 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 78 treesize of output 65 [2021-11-20 07:39:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:48,869 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 74 treesize of output 58 [2021-11-20 07:39:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:39:49,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2021-11-20 07:39:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,125 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 83 treesize of output 67 [2021-11-20 07:39:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-20 07:39:49,394 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-20 07:39:49,395 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 90 treesize of output 89 [2021-11-20 07:39:49,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:49,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 61 [2021-11-20 07:39:50,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:39:50,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2021-11-20 07:39:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,231 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 93 treesize of output 77 [2021-11-20 07:39:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:39:50,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-20 07:39:50,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:50,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:51,020 INFO L354 Elim1Store]: treesize reduction 90, result has 21.1 percent of original size [2021-11-20 07:39:51,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 181 treesize of output 137 [2021-11-20 07:39:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:39:51,072 INFO L354 Elim1Store]: treesize reduction 126, result has 16.0 percent of original size [2021-11-20 07:39:51,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 185 treesize of output 176 [2021-11-20 07:39:51,093 INFO L354 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2021-11-20 07:39:51,093 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 167 treesize of output 133 [2021-11-20 07:39:51,451 INFO L354 Elim1Store]: treesize reduction 73, result has 11.0 percent of original size [2021-11-20 07:39:51,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 161 treesize of output 141 [2021-11-20 07:39:51,480 INFO L354 Elim1Store]: treesize reduction 129, result has 11.6 percent of original size [2021-11-20 07:39:51,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 195 treesize of output 196 [2021-11-20 07:39:51,501 INFO L354 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2021-11-20 07:39:51,501 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 184 treesize of output 172 [2021-11-20 07:39:52,855 INFO L354 Elim1Store]: treesize reduction 106, result has 2.8 percent of original size [2021-11-20 07:39:52,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 208 treesize of output 109 [2021-11-20 07:39:52,873 INFO L354 Elim1Store]: treesize reduction 82, result has 3.5 percent of original size [2021-11-20 07:39:52,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 71 [2021-11-20 07:39:53,273 INFO L354 Elim1Store]: treesize reduction 40, result has 18.4 percent of original size [2021-11-20 07:39:53,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 43 [2021-11-20 07:39:53,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 07:39:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:39:53,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:19,487 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (|ULTIMATE.start_node_create_~data#1| Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse6 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse14 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse17 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_4))) (store .cse17 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse17) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse16 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_5))) (store .cse16 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse16) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (.cse4 (select (select .cse14 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse5 (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8))) (let ((.cse9 (let ((.cse15 (store .cse7 .cse4 (store (select .cse7 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse15 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse15 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|))))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse12 (let ((.cse13 (store .cse14 .cse4 (store (select .cse14 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse10 (select (select .cse12 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse11 (+ .cse8 4))) (let ((.cse0 (select (select .cse12 .cse10) .cse11)) (.cse1 (select (select .cse9 .cse10) .cse11))) (or (< (select |c_#length| .cse0) (+ .cse1 8)) (= (select (select (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|) .cse6 v_DerPreprocessor_3)))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_DerPreprocessor_2))))) (store .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_DerPreprocessor_1))) .cse0) .cse1) |c_ULTIMATE.start_main_~data~0#1|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| (select (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< .cse1 0) (< .cse8 0)))))))))) is different from false [2021-11-20 07:41:04,087 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 537147 treesize of output 529943 [2021-11-20 07:41:05,233 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 1793764 treesize of output 1784880 [2021-11-20 07:41:17,540 WARN L227 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 1097 DAG size of output: 1017 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:41:19,445 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:41:19,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:41:19,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-20 07:41:19,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166321240] [2021-11-20 07:41:19,446 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:41:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 07:41:19,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 07:41:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3645, Unknown=27, NotChecked=122, Total=4032 [2021-11-20 07:41:19,449 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:23,364 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2021-11-20 07:41:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:41:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-20 07:41:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:23,367 INFO L225 Difference]: With dead ends: 86 [2021-11-20 07:41:23,367 INFO L226 Difference]: Without dead ends: 86 [2021-11-20 07:41:23,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 74.5s TimeCoverageRelationStatistics Valid=528, Invalid=6255, Unknown=27, NotChecked=162, Total=6972 [2021-11-20 07:41:23,370 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 293 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:41:23,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 327 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:41:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-20 07:41:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-11-20 07:41:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.1875) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-11-20 07:41:23,373 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 48 [2021-11-20 07:41:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:23,373 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-11-20 07:41:23,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-11-20 07:41:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 07:41:23,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:23,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:23,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:41:23,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 07:41:23,582 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:41:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1979749756, now seen corresponding path program 1 times [2021-11-20 07:41:23,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:23,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852249099] [2021-11-20 07:41:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:23,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:41:24,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:24,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852249099] [2021-11-20 07:41:24,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852249099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:41:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992797106] [2021-11-20 07:41:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:24,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:41:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:24,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:41:24,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:41:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:24,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-20 07:41:24,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:24,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:41:24,973 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:41:24,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-20 07:41:25,213 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-20 07:41:25,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-20 07:41:25,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:41:25,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:25,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-11-20 07:41:25,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:25,701 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 07:41:25,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 43 [2021-11-20 07:41:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,241 INFO L354 Elim1Store]: treesize reduction 88, result has 32.8 percent of original size [2021-11-20 07:41:26,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 65 [2021-11-20 07:41:26,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:26,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,540 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-11-20 07:41:26,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 112 treesize of output 78 [2021-11-20 07:41:26,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-11-20 07:41:26,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:26,800 INFO L354 Elim1Store]: treesize reduction 116, result has 12.8 percent of original size [2021-11-20 07:41:26,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 121 treesize of output 90 [2021-11-20 07:41:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:26,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:41:27,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-20 07:41:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:27,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:27,149 INFO L354 Elim1Store]: treesize reduction 125, result has 6.7 percent of original size [2021-11-20 07:41:27,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 132 treesize of output 93 [2021-11-20 07:41:27,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:27,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:27,974 INFO L354 Elim1Store]: treesize reduction 138, result has 11.0 percent of original size [2021-11-20 07:41:27,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 130 treesize of output 91 [2021-11-20 07:41:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:28,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-20 07:41:28,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:28,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,861 INFO L354 Elim1Store]: treesize reduction 264, result has 16.2 percent of original size [2021-11-20 07:41:28,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 201 treesize of output 146 [2021-11-20 07:41:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:28,914 INFO L354 Elim1Store]: treesize reduction 114, result has 17.4 percent of original size [2021-11-20 07:41:28,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 176 [2021-11-20 07:41:29,536 INFO L354 Elim1Store]: treesize reduction 274, result has 11.6 percent of original size [2021-11-20 07:41:29,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 300 treesize of output 194 [2021-11-20 07:41:29,581 INFO L354 Elim1Store]: treesize reduction 188, result has 13.4 percent of original size [2021-11-20 07:41:29,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 320 treesize of output 278 [2021-11-20 07:41:37,479 INFO L354 Elim1Store]: treesize reduction 130, result has 2.3 percent of original size [2021-11-20 07:41:37,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 289 treesize of output 245 [2021-11-20 07:41:41,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:41:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:41:41,941 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-11-20 07:41:41,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 226 treesize of output 102 [2021-11-20 07:41:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:41:42,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:27,119 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 35360 treesize of output 34828 [2021-11-20 07:42:27,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:42:27,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:42:27,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-11-20 07:42:27,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114321922] [2021-11-20 07:42:27,556 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:27,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:42:27,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:42:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=4755, Unknown=16, NotChecked=0, Total=5112 [2021-11-20 07:42:27,561 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:32,986 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2021-11-20 07:42:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:42:32,987 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2021-11-20 07:42:32,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:32,988 INFO L225 Difference]: With dead ends: 109 [2021-11-20 07:42:32,989 INFO L226 Difference]: Without dead ends: 109 [2021-11-20 07:42:32,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=734, Invalid=8370, Unknown=16, NotChecked=0, Total=9120 [2021-11-20 07:42:32,995 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 372 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:32,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 358 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:42:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-20 07:42:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2021-11-20 07:42:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 75 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) [2021-11-20 07:42:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-11-20 07:42:32,999 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 49 [2021-11-20 07:42:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:32,999 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-11-20 07:42:32,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-11-20 07:42:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 07:42:33,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:33,000 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:33,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-20 07:42:33,214 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-11-20 07:42:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1979749757, now seen corresponding path program 1 times [2021-11-20 07:42:33,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447868233] [2021-11-20 07:42:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:33,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:35,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447868233] [2021-11-20 07:42:35,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447868233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377804038] [2021-11-20 07:42:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:35,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:35,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:35,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1305adc-9332-4164-b85b-9c9b234d4214/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:42:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:35,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-20 07:42:35,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:35,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:42:35,289 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:42:35,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-20 07:42:35,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:42:35,640 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-20 07:42:35,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-20 07:42:35,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 07:42:35,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:42:35,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:42:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:36,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-11-20 07:42:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:36,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-11-20 07:42:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:36,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:42:36,254 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-20 07:42:36,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 75 [2021-11-20 07:42:36,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:36,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:42:36,271 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 07:42:36,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-11-20 07:42:36,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:36,862 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-11-20 07:42:36,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 33 [2021-11-20 07:42:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-11-20 07:42:37,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,166 INFO L354 Elim1Store]: treesize reduction 92, result has 19.3 percent of original size [2021-11-20 07:42:37,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 167 treesize of output 117 [2021-11-20 07:42:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,216 INFO L354 Elim1Store]: treesize reduction 152, result has 20.0 percent of original size [2021-11-20 07:42:37,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 163 treesize of output 171 [2021-11-20 07:42:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,485 INFO L354 Elim1Store]: treesize reduction 160, result has 16.2 percent of original size [2021-11-20 07:42:37,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 185 treesize of output 138 [2021-11-20 07:42:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,552 INFO L354 Elim1Store]: treesize reduction 236, result has 16.6 percent of original size [2021-11-20 07:42:37,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 181 treesize of output 192 [2021-11-20 07:42:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,856 INFO L354 Elim1Store]: treesize reduction 240, result has 14.3 percent of original size [2021-11-20 07:42:37,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 207 treesize of output 152 [2021-11-20 07:42:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:37,927 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-11-20 07:42:37,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 192 treesize of output 195 [2021-11-20 07:42:38,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:38,956 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-11-20 07:42:38,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 221 [2021-11-20 07:42:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:39,068 INFO L354 Elim1Store]: treesize reduction 230, result has 17.9 percent of original size [2021-11-20 07:42:39,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 207 treesize of output 169 [2021-11-20 07:42:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,549 INFO L354 Elim1Store]: treesize reduction 380, result has 13.6 percent of original size [2021-11-20 07:42:40,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 277 treesize of output 208 [2021-11-20 07:42:40,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:42:40,714 INFO L354 Elim1Store]: treesize reduction 584, result has 12.3 percent of original size [2021-11-20 07:42:40,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 29 case distinctions, treesize of input 284 treesize of output 293 [2021-11-20 07:42:41,745 INFO L354 Elim1Store]: treesize reduction 416, result has 7.8 percent of original size [2021-11-20 07:42:41,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 32 case distinctions, treesize of input 750 treesize of output 272 [2021-11-20 07:42:41,878 INFO L354 Elim1Store]: treesize reduction 684, result has 7.4 percent of original size [2021-11-20 07:42:41,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 460 treesize of output 372 [2021-11-20 07:43:01,793 INFO L354 Elim1Store]: treesize reduction 411, result has 8.5 percent of original size [2021-11-20 07:43:01,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 519 treesize of output 227 [2021-11-20 07:43:01,892 INFO L354 Elim1Store]: treesize reduction 389, result has 3.0 percent of original size [2021-11-20 07:43:01,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 206 treesize of output 136 [2021-11-20 07:43:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:43:02,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:18,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int)) (let ((.cse14 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse14 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.base|)))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse14 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.offset|))) (.cse11 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse12 (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| 8))) (let ((.cse5 (let ((.cse13 (store .cse8 .cse11 (store (select .cse8 .cse11) .cse12 |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse2 (let ((.cse9 (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse6 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse0 (select (select .cse5 .cse6) .cse7))) (or (< .cse0 0) (let ((.cse3 (select (select .cse2 .cse6) .cse7)) (.cse4 (+ .cse0 4))) (let ((.cse1 (select (select .cse5 .cse3) .cse4))) (and (<= (+ .cse1 8) (select |c_#length| (select (select .cse2 .cse3) .cse4))) (<= 0 (+ .cse1 4))))) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))))))) is different from false [2021-11-20 07:43:20,211 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int)) (let ((.cse14 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse14 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse14 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse11 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse12 (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| 8))) (let ((.cse6 (let ((.cse13 (store .cse1 .cse11 (store (select .cse1 .cse11) .cse12 |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse3 (let ((.cse9 (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse7 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse0 (select (select .cse6 .cse7) .cse8))) (or (< .cse0 0) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| (select (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (let ((.cse4 (select (select .cse3 .cse7) .cse8)) (.cse5 (+ .cse0 4))) (let ((.cse2 (select (select .cse6 .cse4) .cse5))) (and (<= (+ 8 .cse2) (select |c_#length| (select (select .cse3 .cse4) .cse5))) (<= 0 (+ .cse2 4))))))))))))) is different from false [2021-11-20 07:46:02,048 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int)) (let ((.cse15 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse16 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (store .cse16 .cse15 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse16) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse14 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10))) (store .cse14 .cse15 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse14) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (.cse11 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse12 (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| 8))) (let ((.cse4 (let ((.cse13 (store .cse8 .cse11 (store (select .cse8 .cse11) .cse12 |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse1 (let ((.cse9 (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse6 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ 4 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (let ((.cse5 (select (select .cse4 .cse6) .cse7))) (or (let ((.cse2 (select (select .cse1 .cse6) .cse7)) (.cse3 (+ .cse5 4))) (let ((.cse0 (select (select .cse4 .cse2) .cse3))) (and (<= (+ .cse0 8) (select |c_#length| (select (select .cse1 .cse2) .cse3))) (<= 0 (+ .cse0 4))))) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< .cse5 0))))))))) is different from false [2021-11-20 07:47:23,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (|ULTIMATE.start_node_create_~temp~0#1.offset| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int)) (let ((.cse15 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4)) (.cse16 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) (.cse17 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse18 (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse16 0) .cse17 0) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (store .cse18 .cse15 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse18) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse14 (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse16 0) .cse17 0) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10))) (store .cse14 .cse15 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse14) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (.cse11 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse12 (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| 8))) (let ((.cse5 (let ((.cse13 (store .cse8 .cse11 (store (select .cse8 .cse11) .cse12 |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse2 (let ((.cse9 (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse6 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse0 (select (select .cse5 .cse6) .cse7))) (or (< .cse0 0) (let ((.cse3 (select (select .cse2 .cse6) .cse7)) (.cse4 (+ .cse0 4))) (let ((.cse1 (select (select .cse5 .cse3) .cse4))) (and (<= (+ 8 .cse1) (select |c_#length| (select (select .cse2 .cse3) .cse4))) (<= 0 (+ .cse1 4))))) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))))))) is different from false [2021-11-20 07:48:03,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:48:51,056 WARN L227 SmtUtils]: Spent 46.33s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:48:51,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:48:51,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 597111148120555491 treesize of output 596728088174729319