./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL --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 0d6c543285e4316d7bccce7ec33cf3dc3eeb4c474821e85404caf1203b5dfc7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:10:02,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:10:02,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:10:02,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:10:02,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:10:02,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:10:02,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:10:02,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:10:02,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:10:02,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:10:02,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:10:02,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:10:02,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:10:02,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:10:02,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:10:02,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:10:02,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:10:02,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:10:02,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:10:02,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:10:02,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:10:02,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:10:02,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:10:02,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:10:02,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:10:02,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:10:02,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:10:02,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:10:02,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:10:02,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:10:02,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:10:02,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:10:02,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:10:02,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:10:02,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:10:02,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:10:02,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:10:02,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:10:02,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:10:02,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:10:02,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:10:02,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:10:02,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:10:02,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:10:02,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:10:02,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:10:02,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:10:02,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:10:02,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:10:02,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:10:02,357 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:10:02,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:10:02,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:10:02,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:10:02,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:10:02,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:10:02,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:10:02,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:10:02,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:10:02,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:10:02,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:10:02,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:10:02,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:10:02,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:10:02,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:10:02,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:10:02,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:10:02,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:10:02,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:10:02,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:10:02,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:10:02,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:10:02,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:10:02,368 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_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6c543285e4316d7bccce7ec33cf3dc3eeb4c474821e85404caf1203b5dfc7e [2021-11-19 05:10:02,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:10:02,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:10:02,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:10:02,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:10:02,804 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:10:02,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i [2021-11-19 05:10:02,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/data/a194a0a0f/6560f1d4821e42a0a6fc681706d6d6ec/FLAG961e195d3 [2021-11-19 05:10:03,569 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:10:03,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i [2021-11-19 05:10:03,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/data/a194a0a0f/6560f1d4821e42a0a6fc681706d6d6ec/FLAG961e195d3 [2021-11-19 05:10:03,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/data/a194a0a0f/6560f1d4821e42a0a6fc681706d6d6ec [2021-11-19 05:10:03,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:10:03,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:10:03,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:10:03,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:10:03,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:10:03,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:03" (1/1) ... [2021-11-19 05:10:03,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8a06f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:03, skipping insertion in model container [2021-11-19 05:10:03,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:03" (1/1) ... [2021-11-19 05:10:03,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:10:03,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:10:04,316 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:10:04,333 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:10:04,431 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:10:04,478 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:10:04,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04 WrapperNode [2021-11-19 05:10:04,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:10:04,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:10:04,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:10:04,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:10:04,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:10:04,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:10:04,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:10:04,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:10:04,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (1/1) ... [2021-11-19 05:10:04,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:10:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:10:04,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:10:04,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:10:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:10:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:10:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:10:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:10:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:10:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:10:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:10:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:10:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2021-11-19 05:10:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2021-11-19 05:10:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2021-11-19 05:10:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2021-11-19 05:10:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:10:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:10:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:10:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:10:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:10:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:10:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:10:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:10:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:10:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:10:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:10:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:10:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:10:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:10:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:10:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:10:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:10:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:10:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:10:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:10:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:10:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:10:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:10:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:10:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:10:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:10:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:10:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:10:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:10:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:10:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:10:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:10:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:10:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:10:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:10:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:10:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:10:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:10:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:10:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:10:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:10:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:10:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:10:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:10:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:10:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:10:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:10:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:10:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:10:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:10:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:10:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:10:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:10:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:10:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:10:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:10:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:10:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:10:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:10:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:10:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:10:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:10:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:10:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:10:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:10:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:10:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:10:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:10:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:10:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:10:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:10:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:10:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:10:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:10:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:10:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:10:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:10:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:10:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:10:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:10:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:10:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:10:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:10:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:10:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:10:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:10:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:10:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:10:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:10:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:10:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:10:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:10:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:10:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:10:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:10:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:10:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:10:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:10:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:10:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:10:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:10:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:10:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:10:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:10:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:10:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:10:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:10:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:10:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:10:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:10:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:10:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:10:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:10:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:10:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2021-11-19 05:10:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:10:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2021-11-19 05:10:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:10:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:10:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2021-11-19 05:10:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2021-11-19 05:10:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:10:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:10:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:10:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:10:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:10:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:10:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:10:05,025 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:10:05,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:10:05,545 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:10:05,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:10:05,553 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 05:10:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:05 BoogieIcfgContainer [2021-11-19 05:10:05,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:10:05,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:10:05,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:10:05,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:10:05,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:10:03" (1/3) ... [2021-11-19 05:10:05,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762c0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:05, skipping insertion in model container [2021-11-19 05:10:05,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:04" (2/3) ... [2021-11-19 05:10:05,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762c0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:05, skipping insertion in model container [2021-11-19 05:10:05,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:05" (3/3) ... [2021-11-19 05:10:05,566 INFO L111 eAbstractionObserver]: Analyzing ICFG skiplist_2lvl.i [2021-11-19 05:10:05,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:10:05,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-19 05:10:05,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:10:05,638 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 [2021-11-19 05:10:05,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-19 05:10:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 137 states have internal predecessors, (147), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:10:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:10:05,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:05,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:05,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting create_sl_with_head_and_tailErr0REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1946998629, now seen corresponding path program 1 times [2021-11-19 05:10:05,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:05,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519152477] [2021-11-19 05:10:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:05,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:05,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:05,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519152477] [2021-11-19 05:10:05,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519152477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:05,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:05,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:10:05,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201587250] [2021-11-19 05:10:05,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:05,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:10:05,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:10:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:10:06,007 INFO L87 Difference]: Start difference. First operand has 147 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 137 states have internal predecessors, (147), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:06,423 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2021-11-19 05:10:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:10:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-11-19 05:10:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:06,443 INFO L225 Difference]: With dead ends: 140 [2021-11-19 05:10:06,443 INFO L226 Difference]: Without dead ends: 137 [2021-11-19 05:10:06,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:10:06,460 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 162 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 131 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:10:06,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-19 05:10:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-19 05:10:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 70 states have (on average 1.9142857142857144) internal successors, (134), 128 states have internal predecessors, (134), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2021-11-19 05:10:06,554 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 8 [2021-11-19 05:10:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:06,555 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2021-11-19 05:10:06,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2021-11-19 05:10:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:10:06,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:06,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:06,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:10:06,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sl_with_head_and_tailErr1REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1946998628, now seen corresponding path program 1 times [2021-11-19 05:10:06,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:06,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576534456] [2021-11-19 05:10:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:06,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:06,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:06,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576534456] [2021-11-19 05:10:06,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576534456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:06,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:06,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:10:06,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015427188] [2021-11-19 05:10:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:06,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:10:06,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:10:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:10:06,729 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:07,069 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2021-11-19 05:10:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:10:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-11-19 05:10:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:07,075 INFO L225 Difference]: With dead ends: 130 [2021-11-19 05:10:07,075 INFO L226 Difference]: Without dead ends: 130 [2021-11-19 05:10:07,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:10:07,084 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 147 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:07,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 125 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:10:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-19 05:10:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-19 05:10:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.8142857142857143) internal successors, (127), 121 states have internal predecessors, (127), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-11-19 05:10:07,107 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 8 [2021-11-19 05:10:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:07,108 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-11-19 05:10:07,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-11-19 05:10:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:10:07,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:07,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:07,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:10:07,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sl_with_head_and_tailErr10REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1970482924, now seen corresponding path program 1 times [2021-11-19 05:10:07,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:07,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495013772] [2021-11-19 05:10:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:07,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:07,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:07,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495013772] [2021-11-19 05:10:07,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495013772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:07,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:07,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:10:07,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667127615] [2021-11-19 05:10:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:07,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:10:07,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:10:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:10:07,287 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:07,753 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-11-19 05:10:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:10:07,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:10:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:07,755 INFO L225 Difference]: With dead ends: 129 [2021-11-19 05:10:07,755 INFO L226 Difference]: Without dead ends: 129 [2021-11-19 05:10:07,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:10:07,758 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 129 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:07,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 145 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:10:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-19 05:10:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-19 05:10:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 70 states have (on average 1.8) internal successors, (126), 120 states have internal predecessors, (126), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-11-19 05:10:07,770 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 15 [2021-11-19 05:10:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:07,770 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-11-19 05:10:07,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-11-19 05:10:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:10:07,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:07,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:07,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:10:07,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting create_sl_with_head_and_tailErr11REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1970482923, now seen corresponding path program 1 times [2021-11-19 05:10:07,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:07,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968544480] [2021-11-19 05:10:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:07,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:07,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:07,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968544480] [2021-11-19 05:10:07,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968544480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:07,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:10:07,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695126630] [2021-11-19 05:10:07,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:07,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:10:07,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:10:07,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:10:07,976 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:08,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:08,456 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2021-11-19 05:10:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:10:08,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:10:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:08,459 INFO L225 Difference]: With dead ends: 128 [2021-11-19 05:10:08,459 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 05:10:08,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:10:08,461 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 126 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:08,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 145 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:10:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 05:10:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 05:10:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.7857142857142858) internal successors, (125), 119 states have internal predecessors, (125), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2021-11-19 05:10:08,482 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 15 [2021-11-19 05:10:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:08,483 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2021-11-19 05:10:08,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2021-11-19 05:10:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:10:08,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:08,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:08,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:10:08,485 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting create_sl_with_head_and_tailErr12REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash -955428381, now seen corresponding path program 1 times [2021-11-19 05:10:08,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:08,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749501475] [2021-11-19 05:10:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:08,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:08,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:08,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749501475] [2021-11-19 05:10:08,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749501475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:08,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:08,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:10:08,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892064727] [2021-11-19 05:10:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:08,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:10:08,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:10:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:10:08,574 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:09,014 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-11-19 05:10:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:10:09,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 05:10:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:09,017 INFO L225 Difference]: With dead ends: 127 [2021-11-19 05:10:09,017 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 05:10:09,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:10:09,021 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 127 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:09,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 150 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:10:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 05:10:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-19 05:10:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 118 states have internal predecessors, (124), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-11-19 05:10:09,052 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 16 [2021-11-19 05:10:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:09,053 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-11-19 05:10:09,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-11-19 05:10:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:10:09,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:09,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:09,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:10:09,057 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting create_sl_with_head_and_tailErr13REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -955428380, now seen corresponding path program 1 times [2021-11-19 05:10:09,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:09,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714741482] [2021-11-19 05:10:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:09,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:09,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:09,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714741482] [2021-11-19 05:10:09,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714741482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:09,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:09,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:10:09,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903924162] [2021-11-19 05:10:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:09,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:10:09,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:10:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:10:09,335 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:09,957 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2021-11-19 05:10:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:10:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 05:10:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:09,959 INFO L225 Difference]: With dead ends: 126 [2021-11-19 05:10:09,959 INFO L226 Difference]: Without dead ends: 126 [2021-11-19 05:10:09,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:10:09,960 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:09,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 158 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:10:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-19 05:10:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-11-19 05:10:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 117 states have internal predecessors, (123), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2021-11-19 05:10:09,980 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 16 [2021-11-19 05:10:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:09,981 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2021-11-19 05:10:09,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2021-11-19 05:10:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:10:09,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:09,985 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] [2021-11-19 05:10:09,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:10:09,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting create_sl_with_head_and_tailErr18REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash -88802521, now seen corresponding path program 1 times [2021-11-19 05:10:09,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:09,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657188184] [2021-11-19 05:10:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:09,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:10,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:10,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657188184] [2021-11-19 05:10:10,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657188184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:10,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:10,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:10:10,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791702882] [2021-11-19 05:10:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:10,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:10:10,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:10:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:10:10,284 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:11,149 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-11-19 05:10:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-19 05:10:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:11,151 INFO L225 Difference]: With dead ends: 125 [2021-11-19 05:10:11,151 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 05:10:11,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:10:11,153 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 131 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:11,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 175 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:10:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 05:10:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-19 05:10:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 70 states have (on average 1.7428571428571429) internal successors, (122), 116 states have internal predecessors, (122), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2021-11-19 05:10:11,161 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 20 [2021-11-19 05:10:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:11,162 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2021-11-19 05:10:11,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2021-11-19 05:10:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:10:11,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:11,164 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] [2021-11-19 05:10:11,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:10:11,164 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_sl_with_head_and_tailErr19REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -88802520, now seen corresponding path program 1 times [2021-11-19 05:10:11,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:11,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234110129] [2021-11-19 05:10:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:11,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:11,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:11,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234110129] [2021-11-19 05:10:11,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234110129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:11,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:11,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:10:11,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648701498] [2021-11-19 05:10:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:11,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:10:11,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:10:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:10:11,458 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:12,495 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-11-19 05:10:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:12,496 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-19 05:10:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:12,497 INFO L225 Difference]: With dead ends: 124 [2021-11-19 05:10:12,497 INFO L226 Difference]: Without dead ends: 124 [2021-11-19 05:10:12,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:10:12,498 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 128 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:12,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 182 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:10:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-19 05:10:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-19 05:10:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 115 states have internal predecessors, (121), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2021-11-19 05:10:12,505 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 20 [2021-11-19 05:10:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:12,505 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2021-11-19 05:10:12,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2021-11-19 05:10:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:10:12,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:12,507 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] [2021-11-19 05:10:12,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:10:12,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_sl_with_head_and_tailErr20REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1542089277, now seen corresponding path program 1 times [2021-11-19 05:10:12,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:12,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841265195] [2021-11-19 05:10:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:12,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:12,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:12,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841265195] [2021-11-19 05:10:12,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841265195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:12,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:12,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:10:12,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447650457] [2021-11-19 05:10:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:10:12,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:10:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:10:12,569 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:12,912 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2021-11-19 05:10:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:10:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 05:10:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:12,914 INFO L225 Difference]: With dead ends: 123 [2021-11-19 05:10:12,915 INFO L226 Difference]: Without dead ends: 123 [2021-11-19 05:10:12,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:10:12,916 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 122 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:12,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 147 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:10:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-19 05:10:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-19 05:10:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 70 states have (on average 1.7142857142857142) internal successors, (120), 114 states have internal predecessors, (120), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2021-11-19 05:10:12,927 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 21 [2021-11-19 05:10:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:12,928 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2021-11-19 05:10:12,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2021-11-19 05:10:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:10:12,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:12,930 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] [2021-11-19 05:10:12,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:10:12,930 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_sl_with_head_and_tailErr21REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1542089278, now seen corresponding path program 1 times [2021-11-19 05:10:12,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:12,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204573524] [2021-11-19 05:10:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:12,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:13,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:13,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204573524] [2021-11-19 05:10:13,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204573524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:13,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:13,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:10:13,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995291670] [2021-11-19 05:10:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:13,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:10:13,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:10:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:10:13,287 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:13,988 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2021-11-19 05:10:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:10:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 05:10:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:13,990 INFO L225 Difference]: With dead ends: 122 [2021-11-19 05:10:13,990 INFO L226 Difference]: Without dead ends: 122 [2021-11-19 05:10:13,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:10:13,991 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 135 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:13,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 160 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:10:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-19 05:10:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-19 05:10:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.7) internal successors, (119), 113 states have internal predecessors, (119), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:10:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2021-11-19 05:10:13,996 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 21 [2021-11-19 05:10:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2021-11-19 05:10:13,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:10:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2021-11-19 05:10:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:10:13,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:13,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:14,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:10:14,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting destroy_slErr0REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 937174516, now seen corresponding path program 1 times [2021-11-19 05:10:14,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:14,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937128004] [2021-11-19 05:10:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:14,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:14,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:14,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937128004] [2021-11-19 05:10:14,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937128004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:14,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:14,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:10:14,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125424556] [2021-11-19 05:10:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:14,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:10:14,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:10:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:10:14,168 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:14,840 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-11-19 05:10:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:10:14,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 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 30 [2021-11-19 05:10:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:14,845 INFO L225 Difference]: With dead ends: 167 [2021-11-19 05:10:14,845 INFO L226 Difference]: Without dead ends: 167 [2021-11-19 05:10:14,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:10:14,847 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 281 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:14,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 79 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:10:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-19 05:10:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 123. [2021-11-19 05:10:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.635135135135135) internal successors, (121), 112 states have internal predecessors, (121), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:10:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-11-19 05:10:14,857 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 30 [2021-11-19 05:10:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:14,857 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-11-19 05:10:14,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-11-19 05:10:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:10:14,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:14,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:14,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:10:14,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting destroy_slErr1REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 937174517, now seen corresponding path program 1 times [2021-11-19 05:10:14,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:14,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528211609] [2021-11-19 05:10:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:14,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:15,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:15,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528211609] [2021-11-19 05:10:15,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528211609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:15,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:15,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:10:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629515323] [2021-11-19 05:10:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:15,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:10:15,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:10:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:10:15,063 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:15,826 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2021-11-19 05:10:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:15,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 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 30 [2021-11-19 05:10:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:15,829 INFO L225 Difference]: With dead ends: 181 [2021-11-19 05:10:15,829 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 05:10:15,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:10:15,830 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 326 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:15,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 85 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:10:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 05:10:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 139. [2021-11-19 05:10:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 89 states have (on average 1.6067415730337078) internal successors, (143), 128 states have internal predecessors, (143), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:10:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2021-11-19 05:10:15,837 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 30 [2021-11-19 05:10:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:15,837 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2021-11-19 05:10:15,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2021-11-19 05:10:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:10:15,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:15,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:15,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:10:15,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting sl_random_insertErr0REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 937227116, now seen corresponding path program 1 times [2021-11-19 05:10:15,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:15,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332598449] [2021-11-19 05:10:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:15,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:15,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:15,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332598449] [2021-11-19 05:10:15,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332598449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:15,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:15,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:10:15,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846480737] [2021-11-19 05:10:15,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:15,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:10:15,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:10:15,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:10:15,958 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:16,537 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2021-11-19 05:10:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 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 30 [2021-11-19 05:10:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:16,540 INFO L225 Difference]: With dead ends: 165 [2021-11-19 05:10:16,540 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 05:10:16,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:10:16,541 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 297 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:16,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 71 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:10:16,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 05:10:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 137. [2021-11-19 05:10:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 89 states have (on average 1.5842696629213484) internal successors, (141), 126 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:10:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2021-11-19 05:10:16,548 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 30 [2021-11-19 05:10:16,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:16,548 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2021-11-19 05:10:16,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2021-11-19 05:10:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:10:16,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:16,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:16,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:10:16,550 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting sl_random_insertErr1REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash 937227117, now seen corresponding path program 1 times [2021-11-19 05:10:16,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:16,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990967837] [2021-11-19 05:10:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:16,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:16,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:16,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990967837] [2021-11-19 05:10:16,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990967837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:16,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:16,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:10:16,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504203808] [2021-11-19 05:10:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:16,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:10:16,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:10:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:10:16,761 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:17,428 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2021-11-19 05:10:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 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 30 [2021-11-19 05:10:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:17,431 INFO L225 Difference]: With dead ends: 163 [2021-11-19 05:10:17,431 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 05:10:17,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:10:17,432 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 303 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:17,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 77 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:10:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 05:10:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2021-11-19 05:10:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 124 states have internal predecessors, (139), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:10:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2021-11-19 05:10:17,441 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 30 [2021-11-19 05:10:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:17,443 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2021-11-19 05:10:17,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2021-11-19 05:10:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:10:17,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:17,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:17,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:10:17,445 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting sl_random_insertErr2REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1267874223, now seen corresponding path program 1 times [2021-11-19 05:10:17,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:17,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722047458] [2021-11-19 05:10:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:17,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:18,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:18,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722047458] [2021-11-19 05:10:18,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722047458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:18,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:18,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 05:10:18,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111026405] [2021-11-19 05:10:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:18,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:10:18,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:10:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:10:18,024 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:19,701 INFO L93 Difference]: Finished difference Result 195 states and 220 transitions. [2021-11-19 05:10:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:10:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (4), 4 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 32 [2021-11-19 05:10:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:19,704 INFO L225 Difference]: With dead ends: 195 [2021-11-19 05:10:19,704 INFO L226 Difference]: Without dead ends: 195 [2021-11-19 05:10:19,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=1675, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 05:10:19,706 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 402 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:19,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 87 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:10:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-19 05:10:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2021-11-19 05:10:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 93 states have (on average 1.5053763440860215) internal successors, (140), 124 states have internal predecessors, (140), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 05:10:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2021-11-19 05:10:19,713 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 32 [2021-11-19 05:10:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:19,713 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2021-11-19 05:10:19,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2021-11-19 05:10:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:10:19,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:19,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:19,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:10:19,715 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting sl_random_insertErr3REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1267874222, now seen corresponding path program 1 times [2021-11-19 05:10:19,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:19,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019486635] [2021-11-19 05:10:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:19,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:20,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:20,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019486635] [2021-11-19 05:10:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019486635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:20,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:20,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-19 05:10:20,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305584657] [2021-11-19 05:10:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:20,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 05:10:20,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 05:10:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:10:20,485 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:22,421 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2021-11-19 05:10:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:10:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (4), 4 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 32 [2021-11-19 05:10:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:22,423 INFO L225 Difference]: With dead ends: 233 [2021-11-19 05:10:22,424 INFO L226 Difference]: Without dead ends: 233 [2021-11-19 05:10:22,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 05:10:22,426 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 481 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:22,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 93 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:10:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-19 05:10:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2021-11-19 05:10:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 118 states have (on average 1.5338983050847457) internal successors, (181), 150 states have internal predecessors, (181), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 195 transitions. [2021-11-19 05:10:22,437 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 195 transitions. Word has length 32 [2021-11-19 05:10:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:22,438 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 195 transitions. [2021-11-19 05:10:22,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 195 transitions. [2021-11-19 05:10:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 05:10:22,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:22,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:22,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:10:22,440 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting destroy_slErr14ASSERT_VIOLATIONMEMORY_FREE === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2078728991, now seen corresponding path program 1 times [2021-11-19 05:10:22,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:22,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294107104] [2021-11-19 05:10:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:22,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:22,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:22,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294107104] [2021-11-19 05:10:22,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294107104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:22,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:10:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890437424] [2021-11-19 05:10:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:22,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:10:22,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:10:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:10:22,561 INFO L87 Difference]: Start difference. First operand 162 states and 195 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:23,136 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2021-11-19 05:10:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:10:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 4 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 33 [2021-11-19 05:10:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:23,138 INFO L225 Difference]: With dead ends: 188 [2021-11-19 05:10:23,138 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 05:10:23,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:10:23,139 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 252 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:23,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 92 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:10:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 05:10:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2021-11-19 05:10:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 149 states have internal predecessors, (179), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2021-11-19 05:10:23,147 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 33 [2021-11-19 05:10:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:23,147 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2021-11-19 05:10:23,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2021-11-19 05:10:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:10:23,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:23,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:23,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:10:23,156 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting destroy_slErr6REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash 499884519, now seen corresponding path program 1 times [2021-11-19 05:10:23,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:23,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753753370] [2021-11-19 05:10:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:23,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:23,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:23,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753753370] [2021-11-19 05:10:23,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753753370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:23,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:23,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-19 05:10:23,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701007033] [2021-11-19 05:10:23,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:23,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:10:23,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:23,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:10:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:10:23,622 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:24,933 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2021-11-19 05:10:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:10:24,934 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (4), 4 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 35 [2021-11-19 05:10:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:24,935 INFO L225 Difference]: With dead ends: 189 [2021-11-19 05:10:24,935 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 05:10:24,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 05:10:24,937 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 223 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:24,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 95 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:10:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 05:10:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 166. [2021-11-19 05:10:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.5121951219512195) internal successors, (186), 154 states have internal predecessors, (186), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2021-11-19 05:10:24,946 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 35 [2021-11-19 05:10:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:24,947 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2021-11-19 05:10:24,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2021-11-19 05:10:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:10:24,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:24,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:24,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:10:24,949 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting destroy_slErr7REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 499884520, now seen corresponding path program 1 times [2021-11-19 05:10:24,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:24,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710573884] [2021-11-19 05:10:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:24,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:25,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:25,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710573884] [2021-11-19 05:10:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710573884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:25,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 05:10:25,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299742119] [2021-11-19 05:10:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:25,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:10:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:10:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:10:25,676 INFO L87 Difference]: Start difference. First operand 166 states and 200 transitions. Second operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:27,496 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2021-11-19 05:10:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:10:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (4), 4 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 35 [2021-11-19 05:10:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:27,498 INFO L225 Difference]: With dead ends: 194 [2021-11-19 05:10:27,498 INFO L226 Difference]: Without dead ends: 194 [2021-11-19 05:10:27,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 05:10:27,501 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 223 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:27,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 98 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 05:10:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-19 05:10:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 166. [2021-11-19 05:10:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.5040650406504066) internal successors, (185), 154 states have internal predecessors, (185), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2021-11-19 05:10:27,517 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 35 [2021-11-19 05:10:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:27,517 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2021-11-19 05:10:27,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2021-11-19 05:10:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:10:27,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:27,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:27,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:10:27,520 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1570798655, now seen corresponding path program 1 times [2021-11-19 05:10:27,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:27,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564410479] [2021-11-19 05:10:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:27,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-19 05:10:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:28,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:28,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564410479] [2021-11-19 05:10:28,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564410479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:28,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:28,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-19 05:10:28,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561682333] [2021-11-19 05:10:28,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:28,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:10:28,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:10:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:10:28,208 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 05:10:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:29,431 INFO L93 Difference]: Finished difference Result 192 states and 225 transitions. [2021-11-19 05:10:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:10:29,431 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-11-19 05:10:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:29,433 INFO L225 Difference]: With dead ends: 192 [2021-11-19 05:10:29,433 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 05:10:29,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 05:10:29,435 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 252 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:29,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 85 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:10:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 05:10:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 166. [2021-11-19 05:10:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 154 states have internal predecessors, (184), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2021-11-19 05:10:29,444 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 38 [2021-11-19 05:10:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:29,444 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2021-11-19 05:10:29,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 05:10:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2021-11-19 05:10:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:10:29,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:29,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:29,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:10:29,446 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting destroy_slErr10ASSERT_VIOLATIONMEMORY_FREE === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1408249273, now seen corresponding path program 1 times [2021-11-19 05:10:29,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:29,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105499793] [2021-11-19 05:10:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:29,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:30,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:30,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105499793] [2021-11-19 05:10:30,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105499793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:30,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:30,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-19 05:10:30,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101173880] [2021-11-19 05:10:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:30,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 05:10:30,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 05:10:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:10:30,220 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:31,804 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2021-11-19 05:10:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:10:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (4), 4 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 38 [2021-11-19 05:10:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:31,807 INFO L225 Difference]: With dead ends: 189 [2021-11-19 05:10:31,807 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 05:10:31,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=228, Invalid=1578, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 05:10:31,809 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 226 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:31,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 120 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:10:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 05:10:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2021-11-19 05:10:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 126 states have (on average 1.4841269841269842) internal successors, (187), 157 states have internal predecessors, (187), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2021-11-19 05:10:31,824 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 38 [2021-11-19 05:10:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:31,826 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2021-11-19 05:10:31,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2021-11-19 05:10:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:10:31,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:31,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:31,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 05:10:31,827 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting sl_random_insertErr8REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1381463361, now seen corresponding path program 1 times [2021-11-19 05:10:31,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:31,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818073289] [2021-11-19 05:10:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:31,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:31,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:31,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818073289] [2021-11-19 05:10:31,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818073289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:31,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:31,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:10:31,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457749908] [2021-11-19 05:10:31,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:31,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:10:31,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:10:31,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:10:31,918 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:32,200 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2021-11-19 05:10:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:10:32,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2021-11-19 05:10:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:32,204 INFO L225 Difference]: With dead ends: 187 [2021-11-19 05:10:32,204 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 05:10:32,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:10:32,206 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 233 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:32,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 82 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:10:32,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 05:10:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 168. [2021-11-19 05:10:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 128 states have (on average 1.4453125) internal successors, (185), 156 states have internal predecessors, (185), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2021-11-19 05:10:32,214 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 38 [2021-11-19 05:10:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:32,215 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2021-11-19 05:10:32,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2021-11-19 05:10:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:10:32,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:32,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:32,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 05:10:32,217 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting sl_random_insertErr9REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:32,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1381463360, now seen corresponding path program 1 times [2021-11-19 05:10:32,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:32,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969276499] [2021-11-19 05:10:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:32,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:32,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:32,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969276499] [2021-11-19 05:10:32,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969276499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:32,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:32,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-19 05:10:32,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060657287] [2021-11-19 05:10:32,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:32,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:10:32,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:10:32,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:10:32,933 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:34,471 INFO L93 Difference]: Finished difference Result 232 states and 261 transitions. [2021-11-19 05:10:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 05:10:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (4), 4 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 38 [2021-11-19 05:10:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:34,472 INFO L225 Difference]: With dead ends: 232 [2021-11-19 05:10:34,473 INFO L226 Difference]: Without dead ends: 232 [2021-11-19 05:10:34,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=282, Invalid=2070, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 05:10:34,474 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 510 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:34,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 101 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:10:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-19 05:10:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 173. [2021-11-19 05:10:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 133 states have (on average 1.4360902255639099) internal successors, (191), 161 states have internal predecessors, (191), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2021-11-19 05:10:34,482 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 38 [2021-11-19 05:10:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:34,483 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2021-11-19 05:10:34,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2021-11-19 05:10:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:10:34,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:34,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:34,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 05:10:34,485 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting destroy_slErr11ASSERT_VIOLATIONMEMORY_FREE === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 706054730, now seen corresponding path program 1 times [2021-11-19 05:10:34,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:34,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803631012] [2021-11-19 05:10:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:34,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:34,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:35,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:35,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803631012] [2021-11-19 05:10:35,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803631012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:10:35,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:10:35,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-19 05:10:35,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92268812] [2021-11-19 05:10:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:10:35,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 05:10:35,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:10:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 05:10:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:10:35,074 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:10:36,315 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2021-11-19 05:10:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 05:10:36,316 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 4 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 39 [2021-11-19 05:10:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:10:36,318 INFO L225 Difference]: With dead ends: 194 [2021-11-19 05:10:36,318 INFO L226 Difference]: Without dead ends: 194 [2021-11-19 05:10:36,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 05:10:36,320 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 221 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:10:36,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 102 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:10:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-19 05:10:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 174. [2021-11-19 05:10:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 134 states have (on average 1.4328358208955223) internal successors, (192), 162 states have internal predecessors, (192), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-19 05:10:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2021-11-19 05:10:36,327 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 39 [2021-11-19 05:10:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:10:36,328 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2021-11-19 05:10:36,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:10:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2021-11-19 05:10:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:10:36,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:10:36,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:10:36,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 05:10:36,330 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting sl_random_insertErr2REQUIRES_VIOLATION === [sl_random_insertErr0REQUIRES_VIOLATION, sl_random_insertErr1REQUIRES_VIOLATION, sl_random_insertErr2REQUIRES_VIOLATION, sl_random_insertErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-19 05:10:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:10:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 124361333, now seen corresponding path program 1 times [2021-11-19 05:10:36,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:10:36,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044908175] [2021-11-19 05:10:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:36,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:10:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:10:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-19 05:10:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:37,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:10:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044908175] [2021-11-19 05:10:37,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044908175] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:10:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522086533] [2021-11-19 05:10:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:10:37,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:10:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:10:37,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:10:37,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be18883-7597-46c4-a4ab-a2aef451f607/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:10:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:10:37,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-19 05:10:37,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:10:37,824 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:10:37,826 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-19 05:10:37,849 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:10:37,849 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 19 treesize of output 18 [2021-11-19 05:10:38,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 05:10:38,171 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-19 05:10:38,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-19 05:10:38,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-19 05:10:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:38,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2021-11-19 05:10:39,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:39,050 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-11-19 05:10:39,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 93 [2021-11-19 05:10:39,069 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-19 05:10:39,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 103 [2021-11-19 05:10:39,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:39,347 INFO L354 Elim1Store]: treesize reduction 132, result has 15.4 percent of original size [2021-11-19 05:10:39,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 106 [2021-11-19 05:10:39,384 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-19 05:10:39,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 169 [2021-11-19 05:10:40,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:40,351 INFO L354 Elim1Store]: treesize reduction 198, result has 15.7 percent of original size [2021-11-19 05:10:40,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 129 [2021-11-19 05:10:40,410 INFO L354 Elim1Store]: treesize reduction 136, result has 18.1 percent of original size [2021-11-19 05:10:40,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 222 [2021-11-19 05:10:40,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:40,842 INFO L354 Elim1Store]: treesize reduction 290, result has 13.2 percent of original size [2021-11-19 05:10:40,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 312 treesize of output 147 [2021-11-19 05:10:40,929 INFO L354 Elim1Store]: treesize reduction 212, result has 14.9 percent of original size [2021-11-19 05:10:40,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 294 treesize of output 240 [2021-11-19 05:10:44,982 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-19 05:10:44,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 256 treesize of output 196 [2021-11-19 05:10:45,730 INFO L354 Elim1Store]: treesize reduction 82, result has 3.5 percent of original size [2021-11-19 05:10:45,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 152 [2021-11-19 05:10:46,873 INFO L354 Elim1Store]: treesize reduction 169, result has 4.5 percent of original size [2021-11-19 05:10:46,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 136 treesize of output 65 [2021-11-19 05:10:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:10:47,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:14,492 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 4651 treesize of output 4335 [2021-11-19 05:16:57,967 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sl_with_head_and_tail_#t~mem10.offset| Int) (|v_create_sl_with_head_and_tail_#t~mem8.offset_12| Int) (v_sl_random_insert_~a2~0.offset_16 Int) (|create_sl_with_head_and_tail_#t~mem11.offset| Int) (v_arrayElimCell_46 Int)) (let ((.cse16 (select |c_#memory_$Pointer$.base| c_create_sl_with_head_and_tail_~sl~0.base))) (let ((.cse11 (select .cse16 c_create_sl_with_head_and_tail_~sl~0.offset)) (.cse10 (+ 4 v_arrayElimCell_46)) (.cse14 (+ c_create_sl_with_head_and_tail_~sl~0.offset 4))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse11 (let ((.cse15 (select .cse16 .cse14))) (store (store (select |c_#memory_$Pointer$.base| .cse11) |v_create_sl_with_head_and_tail_#t~mem8.offset_12| .cse15) .cse10 .cse15))))) (let ((.cse12 (select (select .cse13 c_create_sl_with_head_and_tail_~sl~0.base) .cse14)) (.cse8 (+ 4 |create_sl_with_head_and_tail_#t~mem10.offset|))) (let ((.cse3 (store .cse13 .cse12 (store (store (select .cse13 .cse12) |create_sl_with_head_and_tail_#t~mem11.offset| 0) .cse8 0)))) (let ((.cse2 (= |create_sl_with_head_and_tail_#t~mem11.offset| c_create_sl_with_head_and_tail_~sl~0.offset)) (.cse0 (< v_sl_random_insert_~a2~0.offset_16 0)) (.cse1 (= .cse12 c_create_sl_with_head_and_tail_~sl~0.base)) (.cse4 (select (select .cse3 c_create_sl_with_head_and_tail_~sl~0.base) c_create_sl_with_head_and_tail_~sl~0.offset))) (or (and .cse0 .cse1 .cse2) (= (select |c_#valid| (select (select .cse3 .cse4) (+ 4 v_sl_random_insert_~a2~0.offset_16))) 1) (< |v_create_sl_with_head_and_tail_#t~mem8.offset_12| 0) (let ((.cse6 (let ((.cse9 (not (= c_create_sl_with_head_and_tail_~sl~0.base .cse11)))) (and (< v_sl_random_insert_~a2~0.offset_16 v_arrayElimCell_46) (or .cse9 (not (= c_create_sl_with_head_and_tail_~sl~0.offset .cse10))) (or .cse9 (not (= |v_create_sl_with_head_and_tail_#t~mem8.offset_12| c_create_sl_with_head_and_tail_~sl~0.offset)))))) (.cse7 (= .cse8 c_create_sl_with_head_and_tail_~sl~0.offset)) (.cse5 (not .cse1))) (and (or (not .cse2) .cse5) (or .cse6 .cse7) (or .cse1 .cse6) (or .cse0 (not .cse7) .cse5))) (< (select |c_#length| .cse4) (+ 8 v_sl_random_insert_~a2~0.offset_16)) (< v_arrayElimCell_46 |v_create_sl_with_head_and_tail_#t~mem8.offset_12|))))))))) is different from false [2021-11-19 05:19:21,344 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-11-19 05:19:21,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 24101760 treesize of output 23561240