./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:08:34,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:08:34,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:08:34,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:08:34,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:08:34,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:08:34,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:08:34,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:08:34,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:08:34,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:08:34,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:08:34,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:08:34,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:08:34,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:08:34,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:08:34,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:08:34,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:08:34,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:08:34,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:08:34,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:08:34,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:08:34,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:08:34,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:08:34,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:08:34,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:08:34,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:08:34,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:08:34,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:08:34,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:08:34,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:08:34,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:08:34,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:08:34,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:08:34,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:08:34,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:08:34,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:08:34,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:08:34,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:08:34,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:08:34,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:08:34,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:08:34,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-21 19:08:34,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:08:34,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:08:34,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:08:34,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:08:34,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:08:34,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:08:34,446 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:08:34,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:08:34,446 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:08:34,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:08:34,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:08:34,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:08:34,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:08:34,448 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:08:34,448 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:08:34,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:08:34,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:08:34,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:08:34,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:08:34,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:08:34,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:08:34,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:08:34,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:08:34,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:08:34,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:08:34,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:08:34,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:08:34,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:08:34,452 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_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 [2021-10-21 19:08:34,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:08:34,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:08:34,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:08:34,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:08:34,740 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:08:34,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-properties/list-2.i [2021-10-21 19:08:34,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/data/c16b22a6b/c2de0be79e3b479fa9e15344355bb0e5/FLAG74785640f [2021-10-21 19:08:35,347 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:08:35,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/sv-benchmarks/c/list-properties/list-2.i [2021-10-21 19:08:35,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/data/c16b22a6b/c2de0be79e3b479fa9e15344355bb0e5/FLAG74785640f [2021-10-21 19:08:35,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/data/c16b22a6b/c2de0be79e3b479fa9e15344355bb0e5 [2021-10-21 19:08:35,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:08:35,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:08:35,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:08:35,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:08:35,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:08:35,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:08:35" (1/1) ... [2021-10-21 19:08:35,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576c6793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:35, skipping insertion in model container [2021-10-21 19:08:35,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:08:35" (1/1) ... [2021-10-21 19:08:35,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:08:35,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:08:36,100 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2021-10-21 19:08:36,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:08:36,113 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:08:36,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2021-10-21 19:08:36,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:08:36,218 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:08:36,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36 WrapperNode [2021-10-21 19:08:36,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:08:36,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:08:36,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:08:36,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:08:36,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:08:36,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:08:36,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:08:36,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:08:36,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (1/1) ... [2021-10-21 19:08:36,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:08:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:08:36,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:08:36,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:08:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:08:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:08:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:08:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 19:08:36,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:08:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:08:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:08:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:08:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:08:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:08:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:08:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:08:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:08:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:08:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:08:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:08:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:08:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:08:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:08:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:08:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:08:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:08:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:08:36,717 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 19:08:36,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:08:36,928 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:08:36,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:08:36 BoogieIcfgContainer [2021-10-21 19:08:36,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:08:36,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:08:36,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:08:36,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:08:36,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:08:35" (1/3) ... [2021-10-21 19:08:36,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ca3ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:08:36, skipping insertion in model container [2021-10-21 19:08:36,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:36" (2/3) ... [2021-10-21 19:08:36,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ca3ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:08:36, skipping insertion in model container [2021-10-21 19:08:36,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:08:36" (3/3) ... [2021-10-21 19:08:36,946 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2021-10-21 19:08:36,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:08:36,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-21 19:08:36,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:08:36,997 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 [2021-10-21 19:08:36,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-21 19:08:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:08:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:08:37,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:37,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:37,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash 85898829, now seen corresponding path program 1 times [2021-10-21 19:08:37,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:37,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274517015] [2021-10-21 19:08:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:37,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:37,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:37,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274517015] [2021-10-21 19:08:37,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274517015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:37,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:37,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:08:37,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798714937] [2021-10-21 19:08:37,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:08:37,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:08:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:08:37,391 INFO L87 Difference]: Start difference. First operand has 73 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:37,645 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-10-21 19:08:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:08:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:08:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:37,655 INFO L225 Difference]: With dead ends: 80 [2021-10-21 19:08:37,656 INFO L226 Difference]: Without dead ends: 72 [2021-10-21 19:08:37,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:08:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-21 19:08:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-10-21 19:08:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 63 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2021-10-21 19:08:37,701 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 11 [2021-10-21 19:08:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:37,701 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2021-10-21 19:08:37,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2021-10-21 19:08:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:08:37,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:37,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:37,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:08:37,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash 85898830, now seen corresponding path program 1 times [2021-10-21 19:08:37,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:37,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523017440] [2021-10-21 19:08:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:37,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:37,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:37,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523017440] [2021-10-21 19:08:37,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523017440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:37,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:37,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:08:37,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377347582] [2021-10-21 19:08:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:08:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:08:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:08:37,873 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:38,053 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-10-21 19:08:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:08:38,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:08:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:38,059 INFO L225 Difference]: With dead ends: 92 [2021-10-21 19:08:38,060 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 19:08:38,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:08:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 19:08:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2021-10-21 19:08:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 77 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-10-21 19:08:38,082 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 11 [2021-10-21 19:08:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:38,082 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-10-21 19:08:38,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-10-21 19:08:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:08:38,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:38,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:38,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:08:38,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1250386406, now seen corresponding path program 1 times [2021-10-21 19:08:38,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:38,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098147886] [2021-10-21 19:08:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:38,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:38,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:38,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:38,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098147886] [2021-10-21 19:08:38,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098147886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:38,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:38,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:08:38,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614498215] [2021-10-21 19:08:38,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:38,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:38,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:38,262 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:38,500 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-10-21 19:08:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:08:38,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 19:08:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:38,502 INFO L225 Difference]: With dead ends: 120 [2021-10-21 19:08:38,502 INFO L226 Difference]: Without dead ends: 120 [2021-10-21 19:08:38,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:08:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-21 19:08:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 84. [2021-10-21 19:08:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.435483870967742) internal successors, (89), 80 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-10-21 19:08:38,513 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 19 [2021-10-21 19:08:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:38,514 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-10-21 19:08:38,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-10-21 19:08:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:08:38,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:38,515 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:38,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:08:38,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:38,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:38,516 INFO L82 PathProgramCache]: Analyzing trace with hash 13452608, now seen corresponding path program 1 times [2021-10-21 19:08:38,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:38,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061970633] [2021-10-21 19:08:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:38,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:38,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:38,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061970633] [2021-10-21 19:08:38,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061970633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:38,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:38,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:08:38,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766747176] [2021-10-21 19:08:38,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:38,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:38,615 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:38,895 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-10-21 19:08:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:08:38,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 19:08:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:38,899 INFO L225 Difference]: With dead ends: 109 [2021-10-21 19:08:38,899 INFO L226 Difference]: Without dead ends: 109 [2021-10-21 19:08:38,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:08:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-21 19:08:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2021-10-21 19:08:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 83 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-10-21 19:08:38,912 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 19 [2021-10-21 19:08:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:38,913 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-10-21 19:08:38,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-10-21 19:08:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:08:38,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:38,915 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:38,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:08:38,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash 13452609, now seen corresponding path program 1 times [2021-10-21 19:08:38,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:38,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016498532] [2021-10-21 19:08:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:38,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:39,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:39,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016498532] [2021-10-21 19:08:39,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016498532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:39,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:39,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:08:39,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310121914] [2021-10-21 19:08:39,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:39,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:39,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:39,075 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:39,406 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-21 19:08:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:08:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 19:08:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:39,408 INFO L225 Difference]: With dead ends: 110 [2021-10-21 19:08:39,408 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 19:08:39,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:08:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 19:08:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2021-10-21 19:08:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.4) internal successors, (84), 74 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-21 19:08:39,414 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 19 [2021-10-21 19:08:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:39,415 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-21 19:08:39,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-21 19:08:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:08:39,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:39,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:08:39,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr24ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 921876220, now seen corresponding path program 1 times [2021-10-21 19:08:39,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:39,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485167738] [2021-10-21 19:08:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:39,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:39,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:39,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485167738] [2021-10-21 19:08:39,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485167738] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:39,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:39,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:08:39,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925150458] [2021-10-21 19:08:39,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:39,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:39,498 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:39,665 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-10-21 19:08:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:08:39,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 19:08:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:39,666 INFO L225 Difference]: With dead ends: 122 [2021-10-21 19:08:39,666 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:08:39,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:08:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:08:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82. [2021-10-21 19:08:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.390625) internal successors, (89), 78 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2021-10-21 19:08:39,672 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 21 [2021-10-21 19:08:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:39,673 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2021-10-21 19:08:39,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2021-10-21 19:08:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:08:39,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:39,674 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:39,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:08:39,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:39,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash 921928775, now seen corresponding path program 1 times [2021-10-21 19:08:39,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:39,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336468632] [2021-10-21 19:08:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:39,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:39,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:39,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336468632] [2021-10-21 19:08:39,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336468632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:39,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:39,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:08:39,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595312889] [2021-10-21 19:08:39,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:39,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:39,762 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:39,917 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-10-21 19:08:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:08:39,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 19:08:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:39,918 INFO L225 Difference]: With dead ends: 105 [2021-10-21 19:08:39,918 INFO L226 Difference]: Without dead ends: 105 [2021-10-21 19:08:39,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:08:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-21 19:08:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 82. [2021-10-21 19:08:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.375) internal successors, (88), 78 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-10-21 19:08:39,935 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2021-10-21 19:08:39,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:39,935 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-10-21 19:08:39,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-10-21 19:08:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:08:39,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:39,941 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:39,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:08:39,941 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash 626114546, now seen corresponding path program 1 times [2021-10-21 19:08:39,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:39,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61100046] [2021-10-21 19:08:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:39,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:40,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:40,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61100046] [2021-10-21 19:08:40,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61100046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:40,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:40,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:08:40,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628508861] [2021-10-21 19:08:40,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:40,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:40,041 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:40,228 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-10-21 19:08:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:08:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 19:08:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:40,230 INFO L225 Difference]: With dead ends: 88 [2021-10-21 19:08:40,230 INFO L226 Difference]: Without dead ends: 88 [2021-10-21 19:08:40,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:08:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-21 19:08:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-10-21 19:08:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.34375) internal successors, (86), 76 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-10-21 19:08:40,233 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2021-10-21 19:08:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:40,233 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-10-21 19:08:40,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-10-21 19:08:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:08:40,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:40,234 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:40,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:08:40,234 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:40,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:40,235 INFO L82 PathProgramCache]: Analyzing trace with hash 626114547, now seen corresponding path program 1 times [2021-10-21 19:08:40,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:40,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956131491] [2021-10-21 19:08:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:40,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:08:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:08:40,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:40,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956131491] [2021-10-21 19:08:40,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956131491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:40,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:40,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:08:40,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204527392] [2021-10-21 19:08:40,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:08:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:08:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:08:40,356 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:40,598 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-10-21 19:08:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:08:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 19:08:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:08:40,599 INFO L225 Difference]: With dead ends: 85 [2021-10-21 19:08:40,600 INFO L226 Difference]: Without dead ends: 85 [2021-10-21 19:08:40,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:08:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-21 19:08:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2021-10-21 19:08:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 64 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-21 19:08:40,602 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2021-10-21 19:08:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:08:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-21 19:08:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:08:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-21 19:08:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:08:40,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:08:40,604 INFO L512 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] [2021-10-21 19:08:40,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:08:40,604 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr25ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-21 19:08:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1486603147, now seen corresponding path program 1 times [2021-10-21 19:08:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:40,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177226678] [2021-10-21 19:08:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:40,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:40,615 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:40,645 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:40,645 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:08:40,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr25ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:08:40,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:08:40,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:08:40,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:08:40,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:08:40,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:08:40,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:08:40,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 19:08:40,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 19:08:40,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 19:08:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 19:08:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 19:08:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 19:08:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 19:08:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 19:08:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 19:08:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 19:08:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 19:08:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 19:08:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 19:08:40,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:08:40,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:08:40,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:08:40,697 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:08:40,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:08:40 BoogieIcfgContainer [2021-10-21 19:08:40,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:08:40,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:08:40,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:08:40,718 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:08:40,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:08:36" (3/4) ... [2021-10-21 19:08:40,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:08:40,731 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:08:40,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:08:40,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:08:40,773 INFO L168 Benchmark]: Toolchain (without parser) took 5094.47 ms. Allocated memory was 142.6 MB in the beginning and 182.5 MB in the end (delta: 39.8 MB). Free memory was 108.5 MB in the beginning and 139.9 MB in the end (delta: -31.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:40,773 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:08:40,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.85 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 110.4 MB in the end (delta: -2.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:40,774 INFO L168 Benchmark]: Boogie Preprocessor took 70.96 ms. Allocated memory is still 142.6 MB. Free memory was 110.4 MB in the beginning and 107.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:40,774 INFO L168 Benchmark]: RCFGBuilder took 646.26 ms. Allocated memory is still 142.6 MB. Free memory was 107.8 MB in the beginning and 85.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:40,775 INFO L168 Benchmark]: TraceAbstraction took 3777.54 ms. Allocated memory was 142.6 MB in the beginning and 182.5 MB in the end (delta: 39.8 MB). Free memory was 84.8 MB in the beginning and 142.0 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:08:40,775 INFO L168 Benchmark]: Witness Printer took 53.70 ms. Allocated memory is still 182.5 MB. Free memory was 142.0 MB in the beginning and 139.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:08:40,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 530.85 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 110.4 MB in the end (delta: -2.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.96 ms. Allocated memory is still 142.6 MB. Free memory was 110.4 MB in the beginning and 107.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.26 ms. Allocated memory is still 142.6 MB. Free memory was 107.8 MB in the beginning and 85.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3777.54 ms. Allocated memory was 142.6 MB in the beginning and 182.5 MB in the end (delta: 39.8 MB). Free memory was 84.8 MB in the beginning and 142.0 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.70 ms. Allocated memory is still 182.5 MB. Free memory was 142.0 MB in the beginning and 139.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, p={-1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 92 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 3687.3ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 24.2ms, AutomataDifference: 2105.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 395 SDtfs, 696 SDslu, 939 SDs, 0 SdLazy, 1788 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1232.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 639.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.1ms SsaConstructionTime, 186.8ms SatisfiabilityAnalysisTime, 906.6ms InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:08:40,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d868e120-f9b8-40b0-abe8-0778d1820947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...