./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y --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 43bf83586090da08f52ccb7b612d2451c8f1efe9c820d873134ac51350c022e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:59,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:59,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:28:00,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:28:00,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:28:00,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:28:00,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:28:00,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:28:00,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:28:00,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:28:00,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:28:00,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:28:00,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:28:00,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:28:00,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:28:00,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:28:00,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:28:00,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:28:00,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:28:00,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:28:00,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:28:00,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:28:00,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:28:00,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:28:00,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:28:00,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:28:00,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:28:00,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:28:00,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:28:00,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:28:00,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:28:00,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:28:00,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:28:00,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:28:00,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:28:00,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:28:00,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:28:00,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:28:00,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:28:00,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:28:00,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:28:00,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:28:00,107 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:28:00,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:28:00,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:28:00,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:28:00,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:28:00,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:28:00,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:28:00,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:28:00,119 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:28:00,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:28:00,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:28:00,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:28:00,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:28:00,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:28:00,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:28:00,122 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:28:00,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:28:00,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:28:00,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:28:00,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:28:00,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:28:00,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:28:00,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:28:00,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:28:00,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:28:00,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:00,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:28:00,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:28:00,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:28:00,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:28:00,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:28:00,127 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_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43bf83586090da08f52ccb7b612d2451c8f1efe9c820d873134ac51350c022e3 [2021-11-13 18:28:00,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:28:00,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:28:00,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:28:00,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:28:00,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:28:00,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-simple/sll2n_insert_equal.i [2021-11-13 18:28:00,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/data/2c9b2eef9/a2697527ac2c4c0b89c09311cb2a5773/FLAG714f16bd7 [2021-11-13 18:28:01,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:28:01,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/sv-benchmarks/c/list-simple/sll2n_insert_equal.i [2021-11-13 18:28:01,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/data/2c9b2eef9/a2697527ac2c4c0b89c09311cb2a5773/FLAG714f16bd7 [2021-11-13 18:28:01,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/data/2c9b2eef9/a2697527ac2c4c0b89c09311cb2a5773 [2021-11-13 18:28:01,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:28:01,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:28:01,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:01,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:28:01,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:28:01,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:01" (1/1) ... [2021-11-13 18:28:01,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f8c889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:01, skipping insertion in model container [2021-11-13 18:28:01,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:01" (1/1) ... [2021-11-13 18:28:01,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:28:01,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:28:02,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/sv-benchmarks/c/list-simple/sll2n_insert_equal.i[24301,24314] [2021-11-13 18:28:02,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:02,130 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:28:02,179 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/sv-benchmarks/c/list-simple/sll2n_insert_equal.i[24301,24314] [2021-11-13 18:28:02,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:02,229 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:28:02,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02 WrapperNode [2021-11-13 18:28:02,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:02,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:28:02,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:28:02,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:28:02,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:28:02,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:28:02,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:28:02,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:28:02,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:02,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:28:02,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:28:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-13 18:28:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-13 18:28:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2021-11-13 18:28:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2021-11-13 18:28:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2021-11-13 18:28:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:28:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:28:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:28:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:28:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:28:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:28:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:28:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:28:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:28:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:28:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:28:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:28:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:28:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:28:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:28:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:28:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:28:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:28:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:28:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:28:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:28:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:28:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:28:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:28:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:28:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:28:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:28:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:28:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:28:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:28:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:28:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:28:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:28:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:28:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:28:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:28:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:28:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:28:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:28:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:28:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:28:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:28:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:28:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:28:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:28:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:28:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:28:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:28:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:28:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:28:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:28:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:28:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:28:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:28:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-13 18:28:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-13 18:28:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:28:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:28:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:28:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2021-11-13 18:28:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2021-11-13 18:28:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:28:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:28:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2021-11-13 18:28:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:28:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:28:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:28:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:28:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:28:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:28:02,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-13 18:28:03,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:28:03,248 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 18:28:03,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:03 BoogieIcfgContainer [2021-11-13 18:28:03,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:28:03,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:28:03,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:28:03,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:28:03,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:28:01" (1/3) ... [2021-11-13 18:28:03,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd9b093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:03, skipping insertion in model container [2021-11-13 18:28:03,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02" (2/3) ... [2021-11-13 18:28:03,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd9b093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:03, skipping insertion in model container [2021-11-13 18:28:03,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:03" (3/3) ... [2021-11-13 18:28:03,264 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2021-11-13 18:28:03,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:28:03,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-13 18:28:03,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:28:03,341 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 [2021-11-13 18:28:03,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-13 18:28:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 84 states have internal predecessors, (96), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 18:28:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:28:03,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:03,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:03,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1024606834, now seen corresponding path program 1 times [2021-11-13 18:28:03,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:03,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268322519] [2021-11-13 18:28:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:03,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:03,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:03,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268322519] [2021-11-13 18:28:03,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268322519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:03,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:03,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:28:03,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311642999] [2021-11-13 18:28:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:03,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:03,908 INFO L87 Difference]: Start difference. First operand has 99 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 84 states have internal predecessors, (96), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:04,320 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-11-13 18:28:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:04,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-13 18:28:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:04,337 INFO L225 Difference]: With dead ends: 115 [2021-11-13 18:28:04,337 INFO L226 Difference]: Without dead ends: 109 [2021-11-13 18:28:04,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:04,343 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 28 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.00ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:04,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 166 Unknown, 0 Unchecked, 15.00ms Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 339.42ms Time] [2021-11-13 18:28:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-13 18:28:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2021-11-13 18:28:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 50 states have (on average 1.68) internal successors, (84), 78 states have internal predecessors, (84), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:28:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-11-13 18:28:04,399 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 13 [2021-11-13 18:28:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:04,400 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-11-13 18:28:04,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-11-13 18:28:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:28:04,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:04,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:04,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:28:04,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1024606835, now seen corresponding path program 1 times [2021-11-13 18:28:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:04,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640848439] [2021-11-13 18:28:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:04,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:04,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:04,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640848439] [2021-11-13 18:28:04,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640848439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:04,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:04,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:28:04,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303502508] [2021-11-13 18:28:04,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:04,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:04,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:04,530 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:04,847 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2021-11-13 18:28:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:04,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-13 18:28:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:04,856 INFO L225 Difference]: With dead ends: 107 [2021-11-13 18:28:04,856 INFO L226 Difference]: Without dead ends: 107 [2021-11-13 18:28:04,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:04,865 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 23 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.32ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:04,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 128 Invalid, 152 Unknown, 0 Unchecked, 14.32ms Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 264.03ms Time] [2021-11-13 18:28:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-13 18:28:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2021-11-13 18:28:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.64) internal successors, (82), 76 states have internal predecessors, (82), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:28:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-11-13 18:28:04,898 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 13 [2021-11-13 18:28:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:04,899 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-11-13 18:28:04,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-11-13 18:28:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:28:04,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:04,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:04,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:28:04,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting sll_createErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash -640130732, now seen corresponding path program 1 times [2021-11-13 18:28:04,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:04,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662760613] [2021-11-13 18:28:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:04,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:28:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:05,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662760613] [2021-11-13 18:28:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662760613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:05,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:05,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:28:05,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470638967] [2021-11-13 18:28:05,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:05,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:28:05,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:28:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:05,167 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:28:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:05,610 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-11-13 18:28:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-13 18:28:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:05,615 INFO L225 Difference]: With dead ends: 106 [2021-11-13 18:28:05,615 INFO L226 Difference]: Without dead ends: 106 [2021-11-13 18:28:05,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:28:05,625 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 49 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 294.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.58ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:05,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 270 Invalid, 402 Unknown, 0 Unchecked, 9.58ms Time], IncrementalHoareTripleChecker [14 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 376.80ms Time] [2021-11-13 18:28:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-13 18:28:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2021-11-13 18:28:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.62) internal successors, (81), 75 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:28:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-13 18:28:05,652 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 19 [2021-11-13 18:28:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:05,653 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-13 18:28:05,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:28:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-13 18:28:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:28:05,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:05,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:05,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:28:05,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting sll_createErr1REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -640130731, now seen corresponding path program 1 times [2021-11-13 18:28:05,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:05,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589294155] [2021-11-13 18:28:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:05,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:28:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:05,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:05,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589294155] [2021-11-13 18:28:05,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589294155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:05,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:05,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:28:05,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224746393] [2021-11-13 18:28:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:05,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:28:05,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:28:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:05,915 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:28:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:06,319 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2021-11-13 18:28:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-13 18:28:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:06,322 INFO L225 Difference]: With dead ends: 105 [2021-11-13 18:28:06,322 INFO L226 Difference]: Without dead ends: 105 [2021-11-13 18:28:06,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:28:06,324 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 47 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:06,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 278 Invalid, 387 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [13 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 337.04ms Time] [2021-11-13 18:28:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-13 18:28:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2021-11-13 18:28:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.6) internal successors, (80), 74 states have internal predecessors, (80), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:28:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-11-13 18:28:06,334 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 19 [2021-11-13 18:28:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:06,335 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-11-13 18:28:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:28:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-11-13 18:28:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:28:06,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:06,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:06,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:28:06,338 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting sll_insertErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1619934118, now seen corresponding path program 1 times [2021-11-13 18:28:06,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:06,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844981975] [2021-11-13 18:28:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:06,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:28:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:06,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:06,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844981975] [2021-11-13 18:28:06,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844981975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:06,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:06,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:28:06,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468080226] [2021-11-13 18:28:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:06,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:28:06,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:28:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:06,451 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:28:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:06,762 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-11-13 18:28:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2021-11-13 18:28:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:06,764 INFO L225 Difference]: With dead ends: 109 [2021-11-13 18:28:06,765 INFO L226 Difference]: Without dead ends: 106 [2021-11-13 18:28:06,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:28:06,767 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 69 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:06,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 294 Invalid, 235 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 213.12ms Time] [2021-11-13 18:28:06,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-13 18:28:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2021-11-13 18:28:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.588235294117647) internal successors, (81), 75 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:28:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-13 18:28:06,778 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 25 [2021-11-13 18:28:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:06,778 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-13 18:28:06,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:28:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-13 18:28:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:28:06,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:06,781 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] [2021-11-13 18:28:06,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:28:06,782 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting sll_insertErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1524450116, now seen corresponding path program 1 times [2021-11-13 18:28:06,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:06,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291851248] [2021-11-13 18:28:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:06,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 18:28:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 18:28:06,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:06,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291851248] [2021-11-13 18:28:06,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291851248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:06,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831063738] [2021-11-13 18:28:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:06,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:06,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:06,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:28:06,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:28:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:07,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:28:07,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:07,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 18:28:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831063738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:28:07,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:28:07,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2021-11-13 18:28:07,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699669829] [2021-11-13 18:28:07,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:28:07,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:28:07,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:28:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:28:07,785 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-13 18:28:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:08,173 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-11-13 18:28:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:28:08,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 38 [2021-11-13 18:28:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:08,176 INFO L225 Difference]: With dead ends: 115 [2021-11-13 18:28:08,176 INFO L226 Difference]: Without dead ends: 112 [2021-11-13 18:28:08,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:28:08,178 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 83 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:08,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 285 Invalid, 253 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [22 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 291.57ms Time] [2021-11-13 18:28:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-13 18:28:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2021-11-13 18:28:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 80 states have internal predecessors, (86), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 18:28:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-11-13 18:28:08,193 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 38 [2021-11-13 18:28:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:08,193 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-11-13 18:28:08,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-13 18:28:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-11-13 18:28:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:28:08,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:08,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:28:08,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 18:28:08,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 18:28:08,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting sll_insertErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1347685478, now seen corresponding path program 2 times [2021-11-13 18:28:08,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:08,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618962150] [2021-11-13 18:28:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:08,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:28:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:28:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 18:28:09,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:09,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618962150] [2021-11-13 18:28:09,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618962150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:09,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488039049] [2021-11-13 18:28:09,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:28:09,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:09,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:28:09,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:28:09,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:28:09,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:28:09,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:28:09,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:09,589 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 [2021-11-13 18:28:09,630 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 11 treesize of output 9 [2021-11-13 18:28:09,974 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-13 18:28:09,975 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 2 case distinctions, treesize of input 15 treesize of output 19 [2021-11-13 18:28:10,089 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 11 treesize of output 9 [2021-11-13 18:28:10,276 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:28:10,277 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 17 treesize of output 19 [2021-11-13 18:28:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 18:28:10,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488039049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:18,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:28:18,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2021-11-13 18:28:18,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321475256] [2021-11-13 18:28:18,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:28:18,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:28:18,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:28:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=379, Unknown=4, NotChecked=0, Total=462 [2021-11-13 18:28:18,510 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 17 states have internal predecessors, (63), 8 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-13 18:28:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:19,418 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2021-11-13 18:28:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:28:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 17 states have internal predecessors, (63), 8 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 51 [2021-11-13 18:28:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:19,421 INFO L225 Difference]: With dead ends: 137 [2021-11-13 18:28:19,421 INFO L226 Difference]: Without dead ends: 137 [2021-11-13 18:28:19,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=152, Invalid=656, Unknown=4, NotChecked=0, Total=812 [2021-11-13 18:28:19,423 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 98 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 468.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.91ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 549.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:19,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 564 Invalid, 706 Unknown, 0 Unchecked, 8.91ms Time], IncrementalHoareTripleChecker [36 Valid, 536 Invalid, 0 Unknown, 134 Unchecked, 549.26ms Time] [2021-11-13 18:28:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-13 18:28:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2021-11-13 18:28:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 97 states have internal predecessors, (104), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:28:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-11-13 18:28:19,432 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 51 [2021-11-13 18:28:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:19,433 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-11-13 18:28:19,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 17 states have internal predecessors, (63), 8 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-13 18:28:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-11-13 18:28:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:28:19,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:19,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:28:19,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:19,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:19,661 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting sll_insertErr1REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:19,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1347685479, now seen corresponding path program 1 times [2021-11-13 18:28:19,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:19,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924216905] [2021-11-13 18:28:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:19,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:28:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:28:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 18:28:20,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:20,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924216905] [2021-11-13 18:28:20,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924216905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:20,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454726532] [2021-11-13 18:28:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:20,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:20,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:28:20,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:28:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:20,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 18:28:20,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:20,634 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 [2021-11-13 18:28:20,670 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 11 treesize of output 9 [2021-11-13 18:28:21,263 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-13 18:28:21,263 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 2 case distinctions, treesize of input 21 treesize of output 25 [2021-11-13 18:28:21,499 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:28:21,499 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 19 treesize of output 15 [2021-11-13 18:28:21,599 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-13 18:28:21,599 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 [2021-11-13 18:28:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 18:28:21,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:23,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454726532] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:23,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:28:23,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2021-11-13 18:28:23,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333020114] [2021-11-13 18:28:23,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:28:23,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:28:23,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:28:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=419, Unknown=1, NotChecked=0, Total=506 [2021-11-13 18:28:23,871 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 21 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 9 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-13 18:28:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:24,318 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2021-11-13 18:28:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:28:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 9 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 51 [2021-11-13 18:28:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:24,321 INFO L225 Difference]: With dead ends: 137 [2021-11-13 18:28:24,321 INFO L226 Difference]: Without dead ends: 137 [2021-11-13 18:28:24,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=94, Invalid=457, Unknown=1, NotChecked=0, Total=552 [2021-11-13 18:28:24,323 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 71 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 321.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.79ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 380.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:24,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 455 Invalid, 522 Unknown, 0 Unchecked, 6.79ms Time], IncrementalHoareTripleChecker [14 Valid, 369 Invalid, 0 Unknown, 139 Unchecked, 380.80ms Time] [2021-11-13 18:28:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-13 18:28:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2021-11-13 18:28:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 79 states have (on average 1.379746835443038) internal successors, (109), 103 states have internal predecessors, (109), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:28:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-13 18:28:24,332 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 51 [2021-11-13 18:28:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:24,333 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-13 18:28:24,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 9 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-13 18:28:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-13 18:28:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:28:24,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:24,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:28:24,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:24,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:24,545 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting sll_insertErr3REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -456106334, now seen corresponding path program 1 times [2021-11-13 18:28:24,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:24,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652690152] [2021-11-13 18:28:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:24,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:24,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:28:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:28:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:28:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:28:25,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:25,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652690152] [2021-11-13 18:28:25,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652690152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:25,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246605907] [2021-11-13 18:28:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:25,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:25,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:28:25,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:28:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-13 18:28:25,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:25,918 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 [2021-11-13 18:28:26,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-11-13 18:28:26,798 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 29 treesize of output 21 [2021-11-13 18:28:33,456 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-13 18:28:33,456 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 2 case distinctions, treesize of input 90 treesize of output 78 [2021-11-13 18:28:33,479 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:28:33,480 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 79 treesize of output 81 [2021-11-13 18:28:33,526 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-13 18:28:33,526 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 2 case distinctions, treesize of input 78 treesize of output 66 [2021-11-13 18:28:33,542 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-13 18:28:33,542 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 67 treesize of output 67 [2021-11-13 18:28:33,796 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-13 18:28:33,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 57 [2021-11-13 18:28:33,805 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-13 18:28:33,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 33 [2021-11-13 18:28:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:28:34,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:39,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246605907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:39,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:28:39,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 40 [2021-11-13 18:28:39,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768629569] [2021-11-13 18:28:39,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:28:39,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-13 18:28:39,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-13 18:28:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1857, Unknown=4, NotChecked=0, Total=1980 [2021-11-13 18:28:39,010 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 41 states, 34 states have (on average 2.088235294117647) internal successors, (71), 32 states have internal predecessors, (71), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-13 18:28:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:59,680 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-11-13 18:28:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:28:59,681 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 2.088235294117647) internal successors, (71), 32 states have internal predecessors, (71), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2021-11-13 18:28:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:59,683 INFO L225 Difference]: With dead ends: 143 [2021-11-13 18:28:59,684 INFO L226 Difference]: Without dead ends: 143 [2021-11-13 18:28:59,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=235, Invalid=3414, Unknown=11, NotChecked=0, Total=3660 [2021-11-13 18:28:59,687 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 134 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3269.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.93ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 3518.96ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:59,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 951 Invalid, 1761 Unknown, 0 Unchecked, 49.93ms Time], IncrementalHoareTripleChecker [38 Valid, 1457 Invalid, 0 Unknown, 266 Unchecked, 3518.96ms Time] [2021-11-13 18:28:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-13 18:28:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2021-11-13 18:28:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 105 states have internal predecessors, (113), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:28:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-11-13 18:28:59,704 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 54 [2021-11-13 18:28:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:59,706 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-11-13 18:28:59,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 2.088235294117647) internal successors, (71), 32 states have internal predecessors, (71), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-13 18:28:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-11-13 18:28:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:28:59,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:59,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:28:59,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:59,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-13 18:28:59,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting sll_insertErr2REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:28:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash -456106335, now seen corresponding path program 1 times [2021-11-13 18:28:59,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:59,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592387807] [2021-11-13 18:28:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:59,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 18:29:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:01,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592387807] [2021-11-13 18:29:01,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592387807] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:01,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653073207] [2021-11-13 18:29:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:01,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:01,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:01,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:29:01,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:29:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:01,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-13 18:29:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:01,777 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 [2021-11-13 18:29:02,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:29:07,565 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-13 18:29:07,566 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 2 case distinctions, treesize of input 41 treesize of output 33 [2021-11-13 18:29:07,597 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:29:07,597 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 30 treesize of output 32 [2021-11-13 18:29:07,830 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-13 18:29:07,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-11-13 18:29:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:29:07,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:10,077 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_node_create_~temp~0.offset_29 Int) (v_node_create_~temp~0.base_34 Int) (v_DerPreprocessor_3 Int)) (or (= (select (store |c_#valid| v_node_create_~temp~0.base_34 1) (select (select (store |c_#memory_$Pointer$.base| v_node_create_~temp~0.base_34 (store (store (select |c_#memory_$Pointer$.base| v_node_create_~temp~0.base_34) (+ v_node_create_~temp~0.offset_29 4) 0) v_node_create_~temp~0.offset_29 v_DerPreprocessor_3)) c_sll_insert_~head.base) c_sll_insert_~head.offset)) 1) (<= |c_#StackHeapBarrier| v_node_create_~temp~0.base_34))) is different from false [2021-11-13 18:29:10,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653073207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:10,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:10,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2021-11-13 18:29:10,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898911971] [2021-11-13 18:29:10,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:10,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 18:29:10,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 18:29:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=848, Unknown=3, NotChecked=58, Total=992 [2021-11-13 18:29:10,083 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 31 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-13 18:29:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:28,085 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2021-11-13 18:29:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:29:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 54 [2021-11-13 18:29:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:28,089 INFO L225 Difference]: With dead ends: 150 [2021-11-13 18:29:28,089 INFO L226 Difference]: Without dead ends: 150 [2021-11-13 18:29:28,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=150, Invalid=1485, Unknown=9, NotChecked=78, Total=1722 [2021-11-13 18:29:28,091 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2460.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.88ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 2661.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:28,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 636 Invalid, 1287 Unknown, 0 Unchecked, 11.88ms Time], IncrementalHoareTripleChecker [33 Valid, 1184 Invalid, 0 Unknown, 70 Unchecked, 2661.49ms Time] [2021-11-13 18:29:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-13 18:29:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2021-11-13 18:29:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.382716049382716) internal successors, (112), 105 states have internal predecessors, (112), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-11-13 18:29:28,100 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 54 [2021-11-13 18:29:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:28,101 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-11-13 18:29:28,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-13 18:29:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-11-13 18:29:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:29:28,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:28,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:28,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:28,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:29:28,317 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting sll_insertErr4REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1254396018, now seen corresponding path program 1 times [2021-11-13 18:29:28,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:28,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031460214] [2021-11-13 18:29:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:28,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:28,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:28,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031460214] [2021-11-13 18:29:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031460214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:28,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:28,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:29:28,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736751630] [2021-11-13 18:29:28,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:28,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:29:28,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:29:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:29:28,554 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:29,153 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2021-11-13 18:29:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:29:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-13 18:29:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:29,155 INFO L225 Difference]: With dead ends: 144 [2021-11-13 18:29:29,155 INFO L226 Difference]: Without dead ends: 144 [2021-11-13 18:29:29,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:29,157 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 42 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 465.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:29,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 178 Invalid, 177 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [12 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 508.36ms Time] [2021-11-13 18:29:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-13 18:29:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-11-13 18:29:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 106 states have internal predecessors, (113), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-11-13 18:29:29,166 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 55 [2021-11-13 18:29:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:29,166 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-11-13 18:29:29,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-11-13 18:29:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:29:29,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:29,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:29,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:29:29,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting sll_insertErr6REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:29,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1254395858, now seen corresponding path program 1 times [2021-11-13 18:29:29,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:29,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892491748] [2021-11-13 18:29:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:29,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:29,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:29,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892491748] [2021-11-13 18:29:29,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892491748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:29,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:29,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:29:29,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963916512] [2021-11-13 18:29:29,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:29,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:29:29,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:29:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:29:29,384 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:30,064 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-11-13 18:29:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:29:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-13 18:29:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:30,066 INFO L225 Difference]: With dead ends: 138 [2021-11-13 18:29:30,066 INFO L226 Difference]: Without dead ends: 138 [2021-11-13 18:29:30,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:30,067 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 542.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 590.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:30,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 145 Invalid, 195 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 590.60ms Time] [2021-11-13 18:29:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-13 18:29:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2021-11-13 18:29:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 105 states have internal predecessors, (112), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-11-13 18:29:30,075 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 55 [2021-11-13 18:29:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:30,076 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-11-13 18:29:30,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-11-13 18:29:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:29:30,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:30,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:30,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:29:30,078 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting sll_insertErr7REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:30,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1254395857, now seen corresponding path program 1 times [2021-11-13 18:29:30,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:30,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394497839] [2021-11-13 18:29:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:30,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:30,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:30,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394497839] [2021-11-13 18:29:30,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394497839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:30,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:30,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:29:30,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961736523] [2021-11-13 18:29:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:30,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:29:30,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:29:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:30,408 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:31,298 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2021-11-13 18:29:31,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:29:31,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2021-11-13 18:29:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:31,315 INFO L225 Difference]: With dead ends: 137 [2021-11-13 18:29:31,315 INFO L226 Difference]: Without dead ends: 137 [2021-11-13 18:29:31,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:29:31,317 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 108 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 534.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.07ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 594.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:31,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 224 Invalid, 247 Unknown, 0 Unchecked, 13.07ms Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 594.61ms Time] [2021-11-13 18:29:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-13 18:29:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-11-13 18:29:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 82 states have (on average 1.353658536585366) internal successors, (111), 104 states have internal predecessors, (111), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-11-13 18:29:31,325 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 55 [2021-11-13 18:29:31,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:31,325 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-11-13 18:29:31,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-11-13 18:29:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:29:31,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:31,327 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:31,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:29:31,328 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting sll_insertErr8REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash -231565803, now seen corresponding path program 1 times [2021-11-13 18:29:31,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:31,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525386495] [2021-11-13 18:29:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:31,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 18:29:31,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:31,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525386495] [2021-11-13 18:29:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525386495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:31,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:29:31,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669237344] [2021-11-13 18:29:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:31,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:29:31,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:29:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:31,659 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:32,693 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2021-11-13 18:29:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2021-11-13 18:29:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:32,695 INFO L225 Difference]: With dead ends: 136 [2021-11-13 18:29:32,695 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 18:29:32,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:32,696 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 49 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 833.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 900.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:32,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 241 Invalid, 352 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [12 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 900.72ms Time] [2021-11-13 18:29:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 18:29:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2021-11-13 18:29:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 103 states have internal predecessors, (110), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-11-13 18:29:32,705 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 56 [2021-11-13 18:29:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:32,705 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-11-13 18:29:32,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-11-13 18:29:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:29:32,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:32,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:32,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:29:32,708 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting sll_insertErr9REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -231565802, now seen corresponding path program 1 times [2021-11-13 18:29:32,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:32,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638791709] [2021-11-13 18:29:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:32,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:32,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:32,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638791709] [2021-11-13 18:29:32,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638791709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:32,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:32,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:29:32,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240654852] [2021-11-13 18:29:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:32,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:29:32,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:29:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:29:32,960 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:33,780 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-11-13 18:29:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:29:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2021-11-13 18:29:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:33,782 INFO L225 Difference]: With dead ends: 135 [2021-11-13 18:29:33,782 INFO L226 Difference]: Without dead ends: 135 [2021-11-13 18:29:33,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:29:33,783 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 81 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 500.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 543.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:33,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 248 Invalid, 225 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [14 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 543.83ms Time] [2021-11-13 18:29:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-13 18:29:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-11-13 18:29:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 102 states have internal predecessors, (108), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-11-13 18:29:33,795 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 56 [2021-11-13 18:29:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:33,795 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-11-13 18:29:33,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-11-13 18:29:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:29:33,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:33,797 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:33,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:29:33,798 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting sll_insertErr3REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1412812628, now seen corresponding path program 1 times [2021-11-13 18:29:33,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:33,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324039520] [2021-11-13 18:29:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:33,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:34,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:34,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324039520] [2021-11-13 18:29:34,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324039520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:34,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:34,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:29:34,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223998049] [2021-11-13 18:29:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:34,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:29:34,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:29:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:34,164 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:35,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:35,158 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-11-13 18:29:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:29:35,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2021-11-13 18:29:35,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:35,159 INFO L225 Difference]: With dead ends: 132 [2021-11-13 18:29:35,160 INFO L226 Difference]: Without dead ends: 132 [2021-11-13 18:29:35,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:29:35,161 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 94 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 593.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 238 Invalid, 225 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [14 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 643.38ms Time] [2021-11-13 18:29:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-13 18:29:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2021-11-13 18:29:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.3) internal successors, (104), 99 states have internal predecessors, (104), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2021-11-13 18:29:35,169 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 57 [2021-11-13 18:29:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:35,170 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2021-11-13 18:29:35,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:29:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2021-11-13 18:29:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:29:35,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:35,172 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:35,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:29:35,172 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting sll_insertErr4REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash 847516956, now seen corresponding path program 1 times [2021-11-13 18:29:35,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:35,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602654393] [2021-11-13 18:29:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:35,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:35,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:35,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602654393] [2021-11-13 18:29:35,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602654393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:35,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:35,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:29:35,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525596356] [2021-11-13 18:29:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:35,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:35,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:35,397 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:36,020 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2021-11-13 18:29:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:29:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2021-11-13 18:29:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:36,022 INFO L225 Difference]: With dead ends: 131 [2021-11-13 18:29:36,022 INFO L226 Difference]: Without dead ends: 131 [2021-11-13 18:29:36,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:36,024 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 485.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 530.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:36,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 178 Invalid, 235 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [11 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 530.04ms Time] [2021-11-13 18:29:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-13 18:29:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2021-11-13 18:29:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 80 states have (on average 1.2875) internal successors, (103), 98 states have internal predecessors, (103), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2021-11-13 18:29:36,032 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 58 [2021-11-13 18:29:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:36,033 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2021-11-13 18:29:36,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2021-11-13 18:29:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:29:36,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:36,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:36,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:29:36,035 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting sll_insertErr5REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 847516957, now seen corresponding path program 1 times [2021-11-13 18:29:36,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:36,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292393976] [2021-11-13 18:29:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:36,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:36,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:29:37,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:37,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292393976] [2021-11-13 18:29:37,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292393976] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:37,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506541614] [2021-11-13 18:29:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:37,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:37,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:37,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:29:37,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:29:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:37,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:29:37,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:37,913 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 7 treesize of output 3 [2021-11-13 18:29:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 18:29:38,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:29:38,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506541614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:38,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:29:38,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [22] total 24 [2021-11-13 18:29:38,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776019758] [2021-11-13 18:29:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:38,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:29:38,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:29:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:29:38,211 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:38,396 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-11-13 18:29:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:29:38,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2021-11-13 18:29:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:38,397 INFO L225 Difference]: With dead ends: 117 [2021-11-13 18:29:38,398 INFO L226 Difference]: Without dead ends: 117 [2021-11-13 18:29:38,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-13 18:29:38,399 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 7 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:38,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 116.78ms Time] [2021-11-13 18:29:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-13 18:29:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-13 18:29:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 80 states have (on average 1.275) internal successors, (102), 97 states have internal predecessors, (102), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2021-11-13 18:29:38,406 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 58 [2021-11-13 18:29:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:38,406 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2021-11-13 18:29:38,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2021-11-13 18:29:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:29:38,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:38,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:38,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:29:38,633 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting sll_insertErr9REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 503221992, now seen corresponding path program 1 times [2021-11-13 18:29:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:38,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948189308] [2021-11-13 18:29:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:38,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:29:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 18:29:39,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:39,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948189308] [2021-11-13 18:29:39,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948189308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:39,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:39,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:29:39,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353875126] [2021-11-13 18:29:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:39,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:29:39,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:29:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:39,028 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:39,948 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2021-11-13 18:29:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2021-11-13 18:29:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:39,949 INFO L225 Difference]: With dead ends: 129 [2021-11-13 18:29:39,949 INFO L226 Difference]: Without dead ends: 129 [2021-11-13 18:29:39,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:39,951 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 40 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 746.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 810.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:39,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 237 Invalid, 325 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [11 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 810.27ms Time] [2021-11-13 18:29:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-13 18:29:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2021-11-13 18:29:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.2625) internal successors, (101), 96 states have internal predecessors, (101), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions. [2021-11-13 18:29:39,958 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 59 [2021-11-13 18:29:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:39,959 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions. [2021-11-13 18:29:39,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:29:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions. [2021-11-13 18:29:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:29:39,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:39,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:39,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:29:39,961 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2050604162, now seen corresponding path program 1 times [2021-11-13 18:29:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:39,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872195934] [2021-11-13 18:29:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:39,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:29:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:29:40,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:40,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872195934] [2021-11-13 18:29:40,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872195934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:40,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:40,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:40,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966041554] [2021-11-13 18:29:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:29:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:29:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:29:40,239 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:29:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:41,050 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2021-11-13 18:29:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2021-11-13 18:29:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:41,052 INFO L225 Difference]: With dead ends: 129 [2021-11-13 18:29:41,052 INFO L226 Difference]: Without dead ends: 129 [2021-11-13 18:29:41,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:41,054 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 566.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 615.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:41,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 182 Invalid, 264 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 615.38ms Time] [2021-11-13 18:29:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-13 18:29:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2021-11-13 18:29:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 80 states have (on average 1.25) internal successors, (100), 95 states have internal predecessors, (100), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2021-11-13 18:29:41,062 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 62 [2021-11-13 18:29:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:41,062 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2021-11-13 18:29:41,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:29:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2021-11-13 18:29:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:29:41,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:41,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:41,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:29:41,065 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2050604163, now seen corresponding path program 1 times [2021-11-13 18:29:41,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:41,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188854360] [2021-11-13 18:29:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:41,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:29:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:29:41,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:41,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188854360] [2021-11-13 18:29:41,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188854360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:41,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:41,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:29:41,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363737880] [2021-11-13 18:29:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:41,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:29:41,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:29:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:41,433 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 18:29:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:42,293 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-11-13 18:29:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:29:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 62 [2021-11-13 18:29:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:42,295 INFO L225 Difference]: With dead ends: 126 [2021-11-13 18:29:42,295 INFO L226 Difference]: Without dead ends: 126 [2021-11-13 18:29:42,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:29:42,297 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 65 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 621.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 673.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:42,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 214 Invalid, 281 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [12 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 673.04ms Time] [2021-11-13 18:29:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-13 18:29:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 113. [2021-11-13 18:29:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 80 states have (on average 1.225) internal successors, (98), 93 states have internal predecessors, (98), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:29:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2021-11-13 18:29:42,302 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 62 [2021-11-13 18:29:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2021-11-13 18:29:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 18:29:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2021-11-13 18:29:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:29:42,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:42,304 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 18:29:42,305 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting sll_insertErr0REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:42,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1923044732, now seen corresponding path program 3 times [2021-11-13 18:29:42,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:42,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933457763] [2021-11-13 18:29:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:42,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 18:29:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 18:29:42,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:42,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933457763] [2021-11-13 18:29:42,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933457763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:42,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444790075] [2021-11-13 18:29:42,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:29:42,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:42,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:42,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:29:42,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:29:43,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-13 18:29:43,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:43,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:29:43,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 18:29:43,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 18:29:44,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444790075] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:44,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:44,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 14 [2021-11-13 18:29:44,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478228542] [2021-11-13 18:29:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:44,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:29:44,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:29:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:29:44,219 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:29:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:44,305 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2021-11-13 18:29:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:44,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 64 [2021-11-13 18:29:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:44,307 INFO L225 Difference]: With dead ends: 105 [2021-11-13 18:29:44,307 INFO L226 Difference]: Without dead ends: 81 [2021-11-13 18:29:44,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:29:44,308 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 33 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:44,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 230 Invalid, 29 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 80.64ms Time] [2021-11-13 18:29:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-13 18:29:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-13 18:29:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 67 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 18:29:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-11-13 18:29:44,314 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 64 [2021-11-13 18:29:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:44,314 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-11-13 18:29:44,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 18:29:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-11-13 18:29:44,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:29:44,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:44,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:44,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:44,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-13 18:29:44,536 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr2REQUIRES_VIOLATION === [sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2021-11-13 18:29:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2066173258, now seen corresponding path program 1 times [2021-11-13 18:29:44,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:44,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967529795] [2021-11-13 18:29:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:44,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:29:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:29:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:29:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:29:47,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:47,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967529795] [2021-11-13 18:29:47,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967529795] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:47,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225150723] [2021-11-13 18:29:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:47,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:47,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:47,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:29:47,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b173f068-4454-4e33-af59-ecae1b8cca4a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:29:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:47,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 18:29:47,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:47,379 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 [2021-11-13 18:29:48,434 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 11 [2021-11-13 18:30:44,871 INFO L354 Elim1Store]: treesize reduction 1294, result has 21.3 percent of original size [2021-11-13 18:30:44,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 880 treesize of output 568 [2021-11-13 18:30:44,968 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:30:44,969 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 568 treesize of output 572 [2021-11-13 18:34:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:20,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:20,772 INFO L354 Elim1Store]: treesize reduction 33, result has 57.1 percent of original size [2021-11-13 18:34:20,772 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 92 [2021-11-13 18:34:21,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:21,105 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 71 [2021-11-13 18:34:21,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:21,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 68 treesize of output 68 [2021-11-13 18:34:21,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-13 18:34:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:21,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 46 [2021-11-13 18:34:22,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:22,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:22,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:22,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 68 treesize of output 68 [2021-11-13 18:34:22,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:22,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:23,053 INFO L354 Elim1Store]: treesize reduction 76, result has 49.0 percent of original size [2021-11-13 18:34:23,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 82 treesize of output 124 [2021-11-13 18:34:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:23,825 INFO L354 Elim1Store]: treesize reduction 38, result has 54.2 percent of original size [2021-11-13 18:34:23,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 96 [2021-11-13 18:34:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:24,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:24,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:24,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:24,998 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 71 [2021-11-13 18:34:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,358 INFO L354 Elim1Store]: treesize reduction 52, result has 37.3 percent of original size [2021-11-13 18:34:25,358 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-13 18:34:25,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:25,685 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-13 18:34:25,686 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 49 [2021-11-13 18:34:25,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:25,901 INFO L354 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2021-11-13 18:34:25,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 63 [2021-11-13 18:34:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:26,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:26,310 INFO L354 Elim1Store]: treesize reduction 52, result has 28.8 percent of original size [2021-11-13 18:34:26,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 69 [2021-11-13 18:34:43,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:43,855 INFO L354 Elim1Store]: treesize reduction 16, result has 79.2 percent of original size [2021-11-13 18:34:43,855 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 108 [2021-11-13 18:34:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,403 INFO L354 Elim1Store]: treesize reduction 15, result has 81.9 percent of original size [2021-11-13 18:34:44,403 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 115 [2021-11-13 18:34:44,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:44,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:44,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,871 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 48 [2021-11-13 18:34:44,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:44,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:44,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:44,959 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 72 [2021-11-13 18:34:45,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:45,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:45,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,116 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 48 [2021-11-13 18:34:45,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,690 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-13 18:34:45,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 1 [2021-11-13 18:34:45,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,871 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-13 18:34:45,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 1 [2021-11-13 18:34:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:45,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,236 INFO L354 Elim1Store]: treesize reduction 29, result has 65.1 percent of original size [2021-11-13 18:34:46,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 104 [2021-11-13 18:34:46,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,843 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-13 18:34:46,844 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 1 [2021-11-13 18:34:46,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:46,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:47,030 INFO L354 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2021-11-13 18:34:47,031 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 82 [2021-11-13 18:34:47,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:47,290 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-13 18:34:47,292 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 1 [2021-11-13 18:34:47,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:47,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:47,852 INFO L354 Elim1Store]: treesize reduction 39, result has 53.0 percent of original size [2021-11-13 18:34:47,852 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 91 [2021-11-13 18:34:48,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,015 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-13 18:34:49,015 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 1 [2021-11-13 18:34:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,117 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-13 18:34:49,117 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2021-11-13 18:34:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,350 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-13 18:34:49,351 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2021-11-13 18:34:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:49,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 65 treesize of output 45 [2021-11-13 18:34:49,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:49,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:49,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 65 treesize of output 45 [2021-11-13 18:34:50,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:50,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 65 treesize of output 45 [2021-11-13 18:34:50,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:50,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 55 [2021-11-13 18:34:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:50,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:50,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 55 [2021-11-13 18:34:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:51,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:51,059 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:51,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 57 [2021-11-13 18:34:52,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:52,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:52,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 67 treesize of output 45 [2021-11-13 18:34:53,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 67 treesize of output 45 [2021-11-13 18:34:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:53,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 67 treesize of output 45 [2021-11-13 18:34:53,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:53,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 58 [2021-11-13 18:34:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:53,966 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:53,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 60 [2021-11-13 18:34:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,110 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 18:34:54,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 48 [2021-11-13 18:34:54,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,665 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:54,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 57 [2021-11-13 18:34:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:34:54,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:34:54,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 55 [2021-11-13 18:34:55,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-13 18:37:40,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:40,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:40,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:37:40,072 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 175 [2021-11-13 18:37:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:42,870 INFO L354 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2021-11-13 18:37:42,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 244 treesize of output 244 [2021-11-13 18:37:44,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:44,959 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-13 18:37:44,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 65 [2021-11-13 18:37:45,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:45,176 INFO L354 Elim1Store]: treesize reduction 52, result has 38.8 percent of original size [2021-11-13 18:37:45,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 147 treesize of output 155 [2021-11-13 18:37:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:47,669 INFO L354 Elim1Store]: treesize reduction 22, result has 46.3 percent of original size [2021-11-13 18:37:47,669 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 5 new quantified variables, introduced 4 case distinctions, treesize of input 97 treesize of output 93 [2021-11-13 18:37:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:37:48,066 INFO L354 Elim1Store]: treesize reduction 58, result has 31.8 percent of original size [2021-11-13 18:37:48,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 211 treesize of output 207 [2021-11-13 18:40:26,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:40:26,385 INFO L354 Elim1Store]: treesize reduction 31, result has 56.3 percent of original size [2021-11-13 18:40:26,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 491 treesize of output 295 [2021-11-13 18:40:27,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:40:28,028 INFO L354 Elim1Store]: treesize reduction 233, result has 37.2 percent of original size [2021-11-13 18:40:28,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 239 treesize of output 255