./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:05:41,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:05:41,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:05:42,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:05:42,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:05:42,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:05:42,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:05:42,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:05:42,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:05:42,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:05:42,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:05:42,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:05:42,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:05:42,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:05:42,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:05:42,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:05:42,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:05:42,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:05:42,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:05:42,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:05:42,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:05:42,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:05:42,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:05:42,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:05:42,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:05:42,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:05:42,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:05:42,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:05:42,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:05:42,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:05:42,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:05:42,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:05:42,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:05:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:05:42,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:05:42,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:05:42,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:05:42,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:05:42,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:05:42,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:05:42,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:05:42,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-19 05:05:42,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:05:42,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:05:42,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:05:42,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:05:42,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:05:42,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:05:42,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:05:42,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:05:42,114 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:05:42,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:05:42,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:05:42,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:05:42,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:05:42,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:05:42,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:05:42,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:05:42,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:05:42,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:05:42,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:05:42,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:05:42,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:05:42,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:05:42,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:05:42,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:05:42,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:05:42,118 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_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2021-11-19 05:05:42,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:05:42,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:05:42,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:05:42,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:05:42,418 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:05:42,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-11-19 05:05:42,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/data/9e92f476e/975ef43a333940738fd582efe164cb94/FLAG83a754244 [2021-11-19 05:05:43,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:05:43,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-11-19 05:05:43,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/data/9e92f476e/975ef43a333940738fd582efe164cb94/FLAG83a754244 [2021-11-19 05:05:43,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/data/9e92f476e/975ef43a333940738fd582efe164cb94 [2021-11-19 05:05:43,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:05:43,310 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:05:43,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:43,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:05:43,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:05:43,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e078093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43, skipping insertion in model container [2021-11-19 05:05:43,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:05:43,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:05:43,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-11-19 05:05:43,723 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:43,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:05:43,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-11-19 05:05:43,822 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:43,853 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:05:43,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43 WrapperNode [2021-11-19 05:05:43,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:43,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:05:43,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:05:43,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:05:43,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:05:43,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:05:43,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:05:43,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:05:43,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (1/1) ... [2021-11-19 05:05:43,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:05:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:43,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:05:43,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:05:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-19 05:05:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2021-11-19 05:05:43,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:05:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:05:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:05:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:05:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:05:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:05:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:05:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:05:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:05:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:05:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:05:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:05:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:05:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:05:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:05:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:05:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:05:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:05:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:05:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:05:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:05:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:05:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:05:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:05:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:05:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:05:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:05:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:05:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:05:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:05:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:05:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:05:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:05:44,235 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:05:44,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:05:44,298 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-19 05:05:44,630 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:05:44,638 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:05:44,638 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 05:05:44,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:44 BoogieIcfgContainer [2021-11-19 05:05:44,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:05:44,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:05:44,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:05:44,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:05:44,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:43" (1/3) ... [2021-11-19 05:05:44,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5452f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:44, skipping insertion in model container [2021-11-19 05:05:44,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:43" (2/3) ... [2021-11-19 05:05:44,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5452f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:44, skipping insertion in model container [2021-11-19 05:05:44,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:44" (3/3) ... [2021-11-19 05:05:44,672 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-11-19 05:05:44,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:05:44,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-19 05:05:44,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:05:44,746 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:05:44,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-19 05:05:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:05:44,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:44,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:44,775 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting dll_createErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:44,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2056030063, now seen corresponding path program 1 times [2021-11-19 05:05:44,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:44,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274441594] [2021-11-19 05:05:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:44,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:44,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:44,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274441594] [2021-11-19 05:05:44,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274441594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:44,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:44,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:05:44,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603072465] [2021-11-19 05:05:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:44,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:05:44,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:05:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:05:45,016 INFO L87 Difference]: Start difference. First operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:45,204 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2021-11-19 05:05:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:05:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 05:05:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:45,217 INFO L225 Difference]: With dead ends: 98 [2021-11-19 05:05:45,217 INFO L226 Difference]: Without dead ends: 92 [2021-11-19 05:05:45,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:05:45,222 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 118 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:45,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 101 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-19 05:05:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-11-19 05:05:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-11-19 05:05:45,266 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 11 [2021-11-19 05:05:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:45,266 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-11-19 05:05:45,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-11-19 05:05:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:05:45,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:45,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:45,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:05:45,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting dll_createErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2056030062, now seen corresponding path program 1 times [2021-11-19 05:05:45,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:45,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247014058] [2021-11-19 05:05:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:45,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:45,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:45,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247014058] [2021-11-19 05:05:45,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247014058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:45,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:45,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:05:45,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147342832] [2021-11-19 05:05:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:45,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:05:45,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:05:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:05:45,345 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:45,482 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-11-19 05:05:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:05:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 05:05:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:45,484 INFO L225 Difference]: With dead ends: 87 [2021-11-19 05:05:45,484 INFO L226 Difference]: Without dead ends: 87 [2021-11-19 05:05:45,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:05:45,486 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:45,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 92 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-19 05:05:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2021-11-19 05:05:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 77 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-11-19 05:05:45,497 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 11 [2021-11-19 05:05:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:45,497 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-11-19 05:05:45,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-11-19 05:05:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:05:45,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:45,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:45,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:05:45,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -683912238, now seen corresponding path program 1 times [2021-11-19 05:05:45,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:45,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018227183] [2021-11-19 05:05:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:45,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:45,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:45,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018227183] [2021-11-19 05:05:45,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018227183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:45,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:45,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:05:45,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877454702] [2021-11-19 05:05:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:45,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:05:45,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:05:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:05:45,600 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:46,011 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-11-19 05:05:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:05:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-19 05:05:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:46,013 INFO L225 Difference]: With dead ends: 101 [2021-11-19 05:05:46,013 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 05:05:46,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:05:46,015 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 190 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:46,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 96 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 05:05:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-11-19 05:05:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 78 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-11-19 05:05:46,025 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 14 [2021-11-19 05:05:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:46,025 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-11-19 05:05:46,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-11-19 05:05:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:05:46,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:46,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:46,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:05:46,027 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dll_createErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1129091757, now seen corresponding path program 1 times [2021-11-19 05:05:46,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:46,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102146585] [2021-11-19 05:05:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:46,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:46,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:46,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102146585] [2021-11-19 05:05:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102146585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:46,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:46,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:05:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623026899] [2021-11-19 05:05:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:05:46,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:05:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:05:46,151 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:46,289 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-11-19 05:05:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:05:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-19 05:05:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:46,292 INFO L225 Difference]: With dead ends: 95 [2021-11-19 05:05:46,292 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 05:05:46,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:05:46,304 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 100 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:46,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 97 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 05:05:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-11-19 05:05:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.546875) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-11-19 05:05:46,320 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 20 [2021-11-19 05:05:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-11-19 05:05:46,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-11-19 05:05:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:05:46,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:46,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:46,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:05:46,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1531598106, now seen corresponding path program 1 times [2021-11-19 05:05:46,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:46,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991349954] [2021-11-19 05:05:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:46,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:46,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:46,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991349954] [2021-11-19 05:05:46,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991349954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:46,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:46,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:05:46,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30847385] [2021-11-19 05:05:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:46,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:05:46,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:05:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:05:46,543 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:46,987 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-11-19 05:05:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:05:46,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-19 05:05:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:46,989 INFO L225 Difference]: With dead ends: 94 [2021-11-19 05:05:46,989 INFO L226 Difference]: Without dead ends: 94 [2021-11-19 05:05:46,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:05:46,990 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 159 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:46,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 59 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-19 05:05:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2021-11-19 05:05:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 82 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-11-19 05:05:46,997 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 26 [2021-11-19 05:05:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:46,998 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-11-19 05:05:46,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-11-19 05:05:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:05:46,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:47,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:47,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:05:47,000 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:47,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1531598105, now seen corresponding path program 1 times [2021-11-19 05:05:47,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:47,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573539328] [2021-11-19 05:05:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:47,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:47,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:47,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573539328] [2021-11-19 05:05:47,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573539328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:47,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118103572] [2021-11-19 05:05:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:47,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:47,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:47,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:05:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:47,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:05:47,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:47,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:47,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118103572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:47,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:47,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2021-11-19 05:05:47,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98643797] [2021-11-19 05:05:47,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:47,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:05:47,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:47,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:05:47,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:05:47,681 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:48,051 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-11-19 05:05:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:05:48,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-11-19 05:05:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:48,053 INFO L225 Difference]: With dead ends: 106 [2021-11-19 05:05:48,053 INFO L226 Difference]: Without dead ends: 103 [2021-11-19 05:05:48,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:05:48,054 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 263 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:48,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 90 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-19 05:05:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2021-11-19 05:05:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 84 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-11-19 05:05:48,061 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 26 [2021-11-19 05:05:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:48,061 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-11-19 05:05:48,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-11-19 05:05:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:05:48,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:48,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:48,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:48,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-19 05:05:48,264 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1306178878, now seen corresponding path program 1 times [2021-11-19 05:05:48,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:48,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290304335] [2021-11-19 05:05:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:48,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:48,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:48,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290304335] [2021-11-19 05:05:48,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290304335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:48,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903191960] [2021-11-19 05:05:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:48,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:48,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:48,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:05:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:48,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:05:48,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:48,758 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:05:48,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-19 05:05:48,768 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:05:48,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-19 05:05:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:49,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:49,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-19 05:05:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:49,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903191960] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:49,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:49,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2021-11-19 05:05:49,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946209571] [2021-11-19 05:05:49,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:49,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:05:49,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:05:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:05:49,607 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:49,891 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2021-11-19 05:05:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:05:49,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-19 05:05:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:49,892 INFO L225 Difference]: With dead ends: 106 [2021-11-19 05:05:49,892 INFO L226 Difference]: Without dead ends: 106 [2021-11-19 05:05:49,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:05:49,893 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 111 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:49,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 110 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 224 Unchecked, 0.2s Time] [2021-11-19 05:05:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-19 05:05:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-11-19 05:05:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-11-19 05:05:49,899 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 32 [2021-11-19 05:05:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:49,900 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-11-19 05:05:49,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-11-19 05:05:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:05:49,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:49,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:49,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:50,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:50,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash 773915643, now seen corresponding path program 2 times [2021-11-19 05:05:50,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:50,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380753557] [2021-11-19 05:05:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:50,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380753557] [2021-11-19 05:05:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380753557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081414682] [2021-11-19 05:05:50,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:05:50,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:50,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:50,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:05:50,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:05:50,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:05:50,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:05:50,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081414682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:50,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:50,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2021-11-19 05:05:50,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142420019] [2021-11-19 05:05:50,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:50,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:05:50,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:05:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:05:50,778 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:05:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:51,271 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-11-19 05:05:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:05:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-11-19 05:05:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:51,274 INFO L225 Difference]: With dead ends: 119 [2021-11-19 05:05:51,275 INFO L226 Difference]: Without dead ends: 116 [2021-11-19 05:05:51,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:05:51,277 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 299 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:51,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 91 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-19 05:05:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-11-19 05:05:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.353658536585366) internal successors, (111), 97 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-11-19 05:05:51,294 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 38 [2021-11-19 05:05:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:51,296 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-11-19 05:05:51,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:05:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-11-19 05:05:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:05:51,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:51,298 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:51,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 05:05:51,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:51,513 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:51,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1189077604, now seen corresponding path program 1 times [2021-11-19 05:05:51,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:51,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453991779] [2021-11-19 05:05:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:51,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:05:51,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:51,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453991779] [2021-11-19 05:05:51,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453991779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:51,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843585740] [2021-11-19 05:05:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:51,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:51,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:51,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:05:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:51,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:05:51,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:51,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:51,916 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:05:51,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-19 05:05:51,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:05:51,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-19 05:05:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:05:52,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:52,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-19 05:05:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:05:52,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843585740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:52,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:52,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2021-11-19 05:05:52,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045016814] [2021-11-19 05:05:52,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:52,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:05:52,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:05:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:05:52,610 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:52,903 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2021-11-19 05:05:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:05:52,903 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-11-19 05:05:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:52,904 INFO L225 Difference]: With dead ends: 102 [2021-11-19 05:05:52,904 INFO L226 Difference]: Without dead ends: 102 [2021-11-19 05:05:52,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:05:52,906 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 109 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:52,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 97 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2021-11-19 05:05:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-19 05:05:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-11-19 05:05:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 96 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-11-19 05:05:52,920 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 45 [2021-11-19 05:05:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:52,921 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-11-19 05:05:52,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-11-19 05:05:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 05:05:52,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:52,925 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:52,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:53,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-19 05:05:53,137 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1265167833, now seen corresponding path program 1 times [2021-11-19 05:05:53,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:53,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972277159] [2021-11-19 05:05:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:53,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:53,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972277159] [2021-11-19 05:05:53,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972277159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:53,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526769589] [2021-11-19 05:05:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:53,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:53,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:53,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:05:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:05:53,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526769589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:53,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:53,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2021-11-19 05:05:53,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814713516] [2021-11-19 05:05:53,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:53,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:05:53,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:05:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:05:53,982 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:54,381 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-11-19 05:05:54,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:05:54,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-11-19 05:05:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:54,384 INFO L225 Difference]: With dead ends: 130 [2021-11-19 05:05:54,384 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 05:05:54,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:05:54,385 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 364 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:54,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 86 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 05:05:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2021-11-19 05:05:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 109 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-11-19 05:05:54,391 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 52 [2021-11-19 05:05:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:54,391 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-11-19 05:05:54,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-11-19 05:05:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 05:05:54,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:54,393 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:54,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:54,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 05:05:54,609 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash -638876471, now seen corresponding path program 2 times [2021-11-19 05:05:54,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:54,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788397617] [2021-11-19 05:05:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:54,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:54,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:54,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788397617] [2021-11-19 05:05:54,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788397617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:54,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154569504] [2021-11-19 05:05:54,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:05:54,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:54,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 05:05:54,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:05:54,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:05:54,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:05:54,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:55,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154569504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:55,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:05:55,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2021-11-19 05:05:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374118827] [2021-11-19 05:05:55,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 05:05:55,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 05:05:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:05:55,538 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 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) [2021-11-19 05:05:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:56,009 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-11-19 05:05:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:05:56,010 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 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) Word has length 65 [2021-11-19 05:05:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:56,012 INFO L225 Difference]: With dead ends: 143 [2021-11-19 05:05:56,012 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 05:05:56,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:05:56,013 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 356 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:56,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 86 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 05:05:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-11-19 05:05:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 122 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2021-11-19 05:05:56,019 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 65 [2021-11-19 05:05:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:56,020 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2021-11-19 05:05:56,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 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) [2021-11-19 05:05:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2021-11-19 05:05:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 05:05:56,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:56,021 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:56,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:56,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:56,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1355159193, now seen corresponding path program 3 times [2021-11-19 05:05:56,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:56,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54741507] [2021-11-19 05:05:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:56,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 05:05:56,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:56,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54741507] [2021-11-19 05:05:56,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54741507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:56,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:56,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:05:56,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895597841] [2021-11-19 05:05:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:56,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:05:56,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:05:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:05:56,482 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:56,910 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2021-11-19 05:05:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:05:56,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2021-11-19 05:05:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:56,912 INFO L225 Difference]: With dead ends: 163 [2021-11-19 05:05:56,912 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 05:05:56,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:05:56,913 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 177 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:56,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 68 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 05:05:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2021-11-19 05:05:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 148 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2021-11-19 05:05:56,918 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 78 [2021-11-19 05:05:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:56,919 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2021-11-19 05:05:56,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2021-11-19 05:05:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 05:05:56,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:56,921 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:56,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:05:56,921 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr22ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1136298550, now seen corresponding path program 1 times [2021-11-19 05:05:56,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:56,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385025408] [2021-11-19 05:05:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:56,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 05:05:57,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:57,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385025408] [2021-11-19 05:05:57,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385025408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:57,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:57,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:05:57,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550411435] [2021-11-19 05:05:57,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:57,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:05:57,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:57,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:05:57,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:05:57,116 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:57,464 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-11-19 05:05:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:05:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2021-11-19 05:05:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:57,466 INFO L225 Difference]: With dead ends: 160 [2021-11-19 05:05:57,466 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 05:05:57,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:05:57,467 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 171 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:57,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 81 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:05:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 05:05:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-11-19 05:05:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2686567164179106) internal successors, (170), 148 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-11-19 05:05:57,473 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 82 [2021-11-19 05:05:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:57,474 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-11-19 05:05:57,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:05:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-11-19 05:05:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-19 05:05:57,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:57,475 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:57,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:05:57,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:05:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash -22511990, now seen corresponding path program 1 times [2021-11-19 05:05:57,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:57,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401495989] [2021-11-19 05:05:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:57,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:05:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:05:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 05:05:57,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:57,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401495989] [2021-11-19 05:05:57,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401495989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:57,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063637763] [2021-11-19 05:05:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:57,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:57,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 05:05:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 05:05:57,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:58,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:58,097 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:05:58,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:05:58,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:05:58,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 05:05:58,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-19 05:05:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:05:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:05:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:58,316 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-11-19 05:05:58,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 27 [2021-11-19 05:05:58,503 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:05:58,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-19 05:05:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 05:05:58,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:04,135 WARN L838 $PredicateComparison]: unable to prove that (forall ((dll_create_~head~0.offset Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_2)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_1))) c_dll_create_~new_head~0.base) c_dll_create_~new_head~0.offset) 0)) is different from false [2021-11-19 05:06:26,059 WARN L838 $PredicateComparison]: unable to prove that (forall ((|dll_create_#t~ite5| Int) (v_DerPreprocessor_3 Int) (dll_create_~head~0.offset Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8) 0) (+ 16 c_dll_create_~new_head~0.offset) |dll_create_#t~ite5|) (+ c_dll_create_~new_head~0.offset 4) v_DerPreprocessor_3) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_2)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_1))) c_dll_create_~new_head~0.base) c_dll_create_~new_head~0.offset) 0)) is different from false [2021-11-19 05:06:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 2 not checked. [2021-11-19 05:06:26,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063637763] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:26,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:06:26,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 17] total 30 [2021-11-19 05:06:26,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078017183] [2021-11-19 05:06:26,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:26,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-19 05:06:26,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:06:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-19 05:06:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=639, Unknown=36, NotChecked=106, Total=870 [2021-11-19 05:06:26,246 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:06:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:32,500 INFO L93 Difference]: Finished difference Result 160 states and 179 transitions. [2021-11-19 05:06:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:06:32,502 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 86 [2021-11-19 05:06:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:32,504 INFO L225 Difference]: With dead ends: 160 [2021-11-19 05:06:32,504 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 05:06:32,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=267, Invalid=1594, Unknown=39, NotChecked=170, Total=2070 [2021-11-19 05:06:32,506 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 233 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:32,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 101 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1222 Invalid, 0 Unknown, 671 Unchecked, 0.7s Time] [2021-11-19 05:06:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 05:06:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-11-19 05:06:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 148 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:06:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-11-19 05:06:32,511 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 86 [2021-11-19 05:06:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:32,512 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-11-19 05:06:32,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:06:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-11-19 05:06:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 05:06:32,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:32,513 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:32,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:32,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 05:06:32,731 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:06:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1467603535, now seen corresponding path program 1 times [2021-11-19 05:06:32,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:06:32,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693119087] [2021-11-19 05:06:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:32,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:06:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:06:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:06:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 05:06:33,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:06:33,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693119087] [2021-11-19 05:06:33,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693119087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:06:33,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850014938] [2021-11-19 05:06:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:33,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:06:33,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:06:33,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:06:33,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 05:06:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:33,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 05:06:33,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:33,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:06:33,482 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:06:33,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:06:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:06:33,559 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-19 05:06:33,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 05:06:33,585 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-19 05:06:33,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-19 05:06:33,607 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-19 05:06:33,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-19 05:06:33,635 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-19 05:06:33,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-19 05:06:33,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-19 05:06:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 05:06:33,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:45,399 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (dll_create_~head~0.offset Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 4) v_DerPreprocessor_6) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_5)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_4))) c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8)) 0)) is different from false [2021-11-19 05:06:46,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((|dll_create_#t~ite5| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (dll_create_~head~0.offset Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ 16 c_dll_create_~new_head~0.offset) |dll_create_#t~ite5|) (+ c_dll_create_~new_head~0.offset 4) v_DerPreprocessor_6) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_5)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_4))) c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8)) 0)) is different from false [2021-11-19 05:06:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 5 not checked. [2021-11-19 05:06:46,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850014938] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:46,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:06:46,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 29 [2021-11-19 05:06:46,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187462737] [2021-11-19 05:06:46,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:46,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 05:06:46,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:06:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 05:06:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=621, Unknown=13, NotChecked=102, Total=812 [2021-11-19 05:06:46,727 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:06:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:52,197 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions. [2021-11-19 05:06:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:06:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2021-11-19 05:06:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:52,203 INFO L225 Difference]: With dead ends: 168 [2021-11-19 05:06:52,203 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 05:06:52,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 3 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=364, Invalid=1983, Unknown=13, NotChecked=190, Total=2550 [2021-11-19 05:06:52,205 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 231 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:52,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 111 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1625 Invalid, 0 Unknown, 364 Unchecked, 0.8s Time] [2021-11-19 05:06:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 05:06:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2021-11-19 05:06:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 148 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:06:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-11-19 05:06:52,211 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 88 [2021-11-19 05:06:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:52,212 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-11-19 05:06:52,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:06:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-11-19 05:06:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 05:06:52,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:52,213 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:52,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:52,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:06:52,414 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:06:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2087514772, now seen corresponding path program 1 times [2021-11-19 05:06:52,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:06:52,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428904289] [2021-11-19 05:06:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:52,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:06:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:06:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:06:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 05:06:52,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:06:52,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428904289] [2021-11-19 05:06:52,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428904289] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:06:52,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140105732] [2021-11-19 05:06:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:52,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:06:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:06:52,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:06:52,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 05:06:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:52,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 05:06:52,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:52,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:06:53,088 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:06:53,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:06:53,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:06:53,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:06:53,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 05:06:53,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:06:53,300 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-19 05:06:53,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-11-19 05:06:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:06:53,652 INFO L354 Elim1Store]: treesize reduction 47, result has 14.5 percent of original size [2021-11-19 05:06:53,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 29 [2021-11-19 05:06:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 05:06:53,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:01,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 190 [2021-11-19 05:07:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 05:07:03,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140105732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:07:03,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:07:03,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2021-11-19 05:07:03,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294744121] [2021-11-19 05:07:03,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:07:03,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 05:07:03,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:07:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 05:07:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1294, Unknown=6, NotChecked=0, Total=1406 [2021-11-19 05:07:03,565 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 33 states have internal predecessors, (130), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:07:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:04,949 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-11-19 05:07:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:07:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 33 states have internal predecessors, (130), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2021-11-19 05:07:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:04,951 INFO L225 Difference]: With dead ends: 147 [2021-11-19 05:07:04,951 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 05:07:04,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 162 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=318, Invalid=2868, Unknown=6, NotChecked=0, Total=3192 [2021-11-19 05:07:04,953 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 151 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 852 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:04,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 161 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1386 Invalid, 0 Unknown, 852 Unchecked, 0.7s Time] [2021-11-19 05:07:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 05:07:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-11-19 05:07:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.25) internal successors, (150), 134 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:07:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2021-11-19 05:07:04,958 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 89 [2021-11-19 05:07:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:04,959 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2021-11-19 05:07:04,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 33 states have internal predecessors, (130), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:07:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2021-11-19 05:07:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 05:07:04,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:04,960 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:04,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:07:05,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:07:05,181 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-19 05:07:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1619301044, now seen corresponding path program 1 times [2021-11-19 05:07:05,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:07:05,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038238132] [2021-11-19 05:07:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:07:05,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:07:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:07:05,233 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:07:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:07:05,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:07:05,324 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:07:05,325 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ASSERT_VIOLATIONMEMORY_LEAK (34 of 35 remaining) [2021-11-19 05:07:05,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (33 of 35 remaining) [2021-11-19 05:07:05,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (32 of 35 remaining) [2021-11-19 05:07:05,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (31 of 35 remaining) [2021-11-19 05:07:05,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (30 of 35 remaining) [2021-11-19 05:07:05,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (29 of 35 remaining) [2021-11-19 05:07:05,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (28 of 35 remaining) [2021-11-19 05:07:05,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (27 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (26 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (25 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (24 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (23 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (22 of 35 remaining) [2021-11-19 05:07:05,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (21 of 35 remaining) [2021-11-19 05:07:05,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (20 of 35 remaining) [2021-11-19 05:07:05,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (19 of 35 remaining) [2021-11-19 05:07:05,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (18 of 35 remaining) [2021-11-19 05:07:05,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (17 of 35 remaining) [2021-11-19 05:07:05,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (16 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE (15 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_FREE (14 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE (13 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK (12 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr0REQUIRES_VIOLATION (11 of 35 remaining) [2021-11-19 05:07:05,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr1REQUIRES_VIOLATION (10 of 35 remaining) [2021-11-19 05:07:05,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr2REQUIRES_VIOLATION (9 of 35 remaining) [2021-11-19 05:07:05,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr3REQUIRES_VIOLATION (8 of 35 remaining) [2021-11-19 05:07:05,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr4REQUIRES_VIOLATION (7 of 35 remaining) [2021-11-19 05:07:05,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr5REQUIRES_VIOLATION (6 of 35 remaining) [2021-11-19 05:07:05,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr6REQUIRES_VIOLATION (5 of 35 remaining) [2021-11-19 05:07:05,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr7REQUIRES_VIOLATION (4 of 35 remaining) [2021-11-19 05:07:05,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr8REQUIRES_VIOLATION (3 of 35 remaining) [2021-11-19 05:07:05,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr9REQUIRES_VIOLATION (2 of 35 remaining) [2021-11-19 05:07:05,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr10REQUIRES_VIOLATION (1 of 35 remaining) [2021-11-19 05:07:05,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr11REQUIRES_VIOLATION (0 of 35 remaining) [2021-11-19 05:07:05,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:07:05,339 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:05,344 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:07:05,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:07:05 BoogieIcfgContainer [2021-11-19 05:07:05,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:07:05,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:07:05,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:07:05,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:07:05,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:44" (3/4) ... [2021-11-19 05:07:05,417 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:07:05,489 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:07:05,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:07:05,490 INFO L158 Benchmark]: Toolchain (without parser) took 82179.31ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 58.2MB in the beginning and 72.1MB in the end (delta: -13.9MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,491 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:07:05,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.10ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 64.6MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,491 INFO L158 Benchmark]: Boogie Preprocessor took 58.85ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 61.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,492 INFO L158 Benchmark]: RCFGBuilder took 726.20ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 70.3MB in the end (delta: -8.5MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,492 INFO L158 Benchmark]: TraceAbstraction took 80772.09ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 69.8MB in the beginning and 76.3MB in the end (delta: -6.5MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,497 INFO L158 Benchmark]: Witness Printer took 74.45ms. Allocated memory is still 153.1MB. Free memory was 76.3MB in the beginning and 72.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 05:07:05,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.10ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 64.6MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.85ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 61.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.20ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 70.3MB in the end (delta: -8.5MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 80772.09ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 69.8MB in the beginning and 76.3MB in the end (delta: -6.5MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * Witness Printer took 74.45ms. Allocated memory is still 153.1MB. Free memory was 76.3MB in the beginning and 72.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 VAL [head={-5:0}, head->data_0=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() VAL [head={-5:0}, len=5] - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 109 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 80.6s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3141 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3135 mSDsluCounter, 1527 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2258 IncrementalHoareTripleChecker+Unchecked, 386 mSDsCounter, 300 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8266 IncrementalHoareTripleChecker+Invalid, 10824 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 300 mSolverCounterUnsat, 1141 mSDtfsCounter, 8266 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1371 GetRequests, 1026 SyntacticMatches, 15 SemanticMatches, 330 ConstructedPredicates, 4 IntricatePredicates, 3 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 61.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=12, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 120 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 58.7s InterpolantComputationTime, 1374 NumberOfCodeBlocks, 1374 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1771 ConstructedInterpolants, 93 QuantifiedInterpolants, 9767 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2671 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 34 InterpolantComputations, 7 PerfectInterpolantSequences, 1410/1982 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! [2021-11-19 05:07:05,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2684f6-9274-4a0b-b6b9-dc1db339b4ba/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)