./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:51,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:51,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:52,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:52,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:52,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:52,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:52,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:52,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:52,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:52,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:52,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:52,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:52,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:52,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:52,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:52,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:52,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:52,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:52,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:52,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:52,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:52,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:52,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:52,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:52,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:52,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:52,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:52,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:52,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:52,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:52,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:52,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:52,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:52,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:52,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:52,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:52,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:52,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:52,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:52,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:52,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:29:52,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:52,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:52,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:52,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:52,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:52,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:52,164 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:52,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:52,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:52,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:52,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:52,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:52,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:52,166 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:29:52,166 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:29:52,167 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:29:52,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:52,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:29:52,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:52,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:52,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:52,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:52,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:52,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:52,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:52,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:52,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:52,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:52,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:52,180 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_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-09 08:29:52,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:52,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:52,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:52,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:52,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:52,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-09 08:29:52,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/e47a35661/de333d692f5e4d09b85852c68f5d9c02/FLAGc6b53bf9f [2021-11-09 08:29:53,069 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:53,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-09 08:29:53,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/e47a35661/de333d692f5e4d09b85852c68f5d9c02/FLAGc6b53bf9f [2021-11-09 08:29:53,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/e47a35661/de333d692f5e4d09b85852c68f5d9c02 [2021-11-09 08:29:53,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:53,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:29:53,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:53,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:53,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:53,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcff38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53, skipping insertion in model container [2021-11-09 08:29:53,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:53,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:53,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-09 08:29:53,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-09 08:29:53,916 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-09 08:29:53,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:53,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:53,970 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-09 08:29:53,971 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-09 08:29:53,973 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-09 08:29:53,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:54,017 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:54,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54 WrapperNode [2021-11-09 08:29:54,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:54,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:54,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:54,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:54,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:54,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:54,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:54,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:54,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:29:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:29:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:29:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:29:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:29:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:29:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:29:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:29:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:29:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:29:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:29:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:29:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-09 08:29:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:29:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:29:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:29:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:29:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:29:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:29:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:29:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:29:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:29:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:29:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:29:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:29:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:29:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:29:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:29:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:29:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:29:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:29:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:29:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:29:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:55,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:55,055 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-09 08:29:55,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:55 BoogieIcfgContainer [2021-11-09 08:29:55,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:55,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:29:55,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:29:55,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:29:55,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:53" (1/3) ... [2021-11-09 08:29:55,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4082835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:55, skipping insertion in model container [2021-11-09 08:29:55,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (2/3) ... [2021-11-09 08:29:55,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4082835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:55, skipping insertion in model container [2021-11-09 08:29:55,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:55" (3/3) ... [2021-11-09 08:29:55,066 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-09 08:29:55,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:29:55,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-09 08:29:55,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:29:55,132 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 [2021-11-09 08:29:55,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-09 08:29:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 08:29:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:29:55,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:55,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:55,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:55,195 INFO L85 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-11-09 08:29:55,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:55,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208096202] [2021-11-09 08:29:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:55,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:55,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:55,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208096202] [2021-11-09 08:29:55,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208096202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:55,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:55,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:55,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289084682] [2021-11-09 08:29:55,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:29:55,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:29:55,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:29:55,541 INFO L87 Difference]: Start difference. First operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:55,926 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-11-09 08:29:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:29:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:29:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:55,938 INFO L225 Difference]: With dead ends: 127 [2021-11-09 08:29:55,939 INFO L226 Difference]: Without dead ends: 123 [2021-11-09 08:29:55,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:29:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-09 08:29:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-11-09 08:29:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.835820895522388) internal successors, (123), 115 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-11-09 08:29:55,996 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-11-09 08:29:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:55,997 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-11-09 08:29:55,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-11-09 08:29:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:29:55,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:55,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:55,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:29:55,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-11-09 08:29:56,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299836256] [2021-11-09 08:29:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:56,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:56,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299836256] [2021-11-09 08:29:56,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299836256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:56,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:56,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:56,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046442192] [2021-11-09 08:29:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:29:56,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:29:56,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:29:56,167 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:56,471 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-11-09 08:29:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:29:56,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:29:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:56,479 INFO L225 Difference]: With dead ends: 137 [2021-11-09 08:29:56,479 INFO L226 Difference]: Without dead ends: 137 [2021-11-09 08:29:56,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:29:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-09 08:29:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-11-09 08:29:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 120 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-11-09 08:29:56,504 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-11-09 08:29:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:56,504 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-11-09 08:29:56,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-11-09 08:29:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:29:56,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:56,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:56,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:29:56,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-11-09 08:29:56,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592042140] [2021-11-09 08:29:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:56,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:56,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592042140] [2021-11-09 08:29:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592042140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:56,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:56,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:29:56,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824505487] [2021-11-09 08:29:56,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:29:56,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:29:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:29:56,670 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:56,971 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-11-09 08:29:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:29:56,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:29:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:56,973 INFO L225 Difference]: With dead ends: 131 [2021-11-09 08:29:56,974 INFO L226 Difference]: Without dead ends: 131 [2021-11-09 08:29:56,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:29:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-09 08:29:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-11-09 08:29:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-11-09 08:29:56,983 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-11-09 08:29:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:56,984 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-11-09 08:29:56,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-11-09 08:29:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:29:56,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:56,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:56,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:29:56,986 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-11-09 08:29:56,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000021112] [2021-11-09 08:29:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:57,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:57,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000021112] [2021-11-09 08:29:57,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000021112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:57,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:57,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:29:57,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651722921] [2021-11-09 08:29:57,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:29:57,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:57,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:29:57,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:29:57,120 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:57,443 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-11-09 08:29:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:29:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:29:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:57,445 INFO L225 Difference]: With dead ends: 155 [2021-11-09 08:29:57,445 INFO L226 Difference]: Without dead ends: 155 [2021-11-09 08:29:57,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:29:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-09 08:29:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-11-09 08:29:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 122 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-09 08:29:57,455 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-11-09 08:29:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:57,455 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-09 08:29:57,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-09 08:29:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 08:29:57,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:57,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:57,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:29:57,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-11-09 08:29:57,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770464037] [2021-11-09 08:29:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:57,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:57,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770464037] [2021-11-09 08:29:57,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770464037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:57,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:57,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:29:57,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855222683] [2021-11-09 08:29:57,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:29:57,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:29:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:29:57,519 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:57,752 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-09 08:29:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:29:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 08:29:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:57,754 INFO L225 Difference]: With dead ends: 140 [2021-11-09 08:29:57,754 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 08:29:57,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:29:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 08:29:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-11-09 08:29:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-11-09 08:29:57,782 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-11-09 08:29:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:57,782 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-11-09 08:29:57,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-11-09 08:29:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:29:57,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:57,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:57,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:29:57,785 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-11-09 08:29:57,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453942796] [2021-11-09 08:29:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:57,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:57,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453942796] [2021-11-09 08:29:57,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453942796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:57,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:57,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:29:57,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291774544] [2021-11-09 08:29:57,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:29:57,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:29:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:29:57,893 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:58,188 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-11-09 08:29:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:29:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:29:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:58,190 INFO L225 Difference]: With dead ends: 125 [2021-11-09 08:29:58,190 INFO L226 Difference]: Without dead ends: 125 [2021-11-09 08:29:58,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:29:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-09 08:29:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-11-09 08:29:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-09 08:29:58,196 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-11-09 08:29:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:58,196 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-09 08:29:58,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-09 08:29:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:29:58,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:58,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:58,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:29:58,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-11-09 08:29:58,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805404602] [2021-11-09 08:29:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805404602] [2021-11-09 08:29:58,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805404602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:29:58,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134703890] [2021-11-09 08:29:58,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:29:58,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:29:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:29:58,364 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:58,684 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-11-09 08:29:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:29:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:29:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:58,693 INFO L225 Difference]: With dead ends: 125 [2021-11-09 08:29:58,694 INFO L226 Difference]: Without dead ends: 125 [2021-11-09 08:29:58,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:29:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-09 08:29:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-11-09 08:29:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-11-09 08:29:58,699 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-11-09 08:29:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:58,699 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-11-09 08:29:58,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-11-09 08:29:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:29:58,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:58,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:58,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:29:58,701 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-11-09 08:29:58,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548566451] [2021-11-09 08:29:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:29:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548566451] [2021-11-09 08:29:58,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548566451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:29:58,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845027341] [2021-11-09 08:29:58,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:29:58,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:29:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:29:58,840 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,112 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-11-09 08:29:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:29:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 08:29:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,114 INFO L225 Difference]: With dead ends: 181 [2021-11-09 08:29:59,114 INFO L226 Difference]: Without dead ends: 181 [2021-11-09 08:29:59,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:29:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-09 08:29:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-11-09 08:29:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 121 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-11-09 08:29:59,120 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-11-09 08:29:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,121 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-11-09 08:29:59,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:29:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-11-09 08:29:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 08:29:59,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,122 INFO L513 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] [2021-11-09 08:29:59,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:29:59,122 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:29:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-11-09 08:29:59,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010932220] [2021-11-09 08:29:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:59,138 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:59,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:59,174 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:29:59,175 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:29:59,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-09 08:29:59,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-09 08:29:59,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-09 08:29:59,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-09 08:29:59,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-09 08:29:59,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-09 08:29:59,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-09 08:29:59,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-09 08:29:59,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-09 08:29:59,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-09 08:29:59,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-11-09 08:29:59,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-11-09 08:29:59,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-11-09 08:29:59,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-11-09 08:29:59,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-11-09 08:29:59,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-11-09 08:29:59,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-11-09 08:29:59,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:29:59,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 08:29:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:29:59,190 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:59,193 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:29:59,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:29:59 BoogieIcfgContainer [2021-11-09 08:29:59,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:29:59,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:29:59,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:29:59,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:29:59,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:55" (3/4) ... [2021-11-09 08:29:59,220 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:29:59,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:29:59,222 INFO L168 Benchmark]: Toolchain (without parser) took 5690.84 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 80.4 MB in the beginning and 70.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:59,222 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 81.8 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:59,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.23 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 63.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:59,223 INFO L168 Benchmark]: Boogie Preprocessor took 114.89 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:59,224 INFO L168 Benchmark]: RCFGBuilder took 921.90 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 66.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:59,224 INFO L168 Benchmark]: TraceAbstraction took 4157.18 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 66.2 MB in the beginning and 70.8 MB in the end (delta: -4.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:59,225 INFO L168 Benchmark]: Witness Printer took 3.81 ms. Allocated memory is still 134.2 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:59,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 81.8 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.23 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 63.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 114.89 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 921.90 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 66.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4157.18 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 66.2 MB in the beginning and 70.8 MB in the end (delta: -4.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.81 ms. Allocated memory is still 134.2 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 54, 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, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-09 08:29:59,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:30:01,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:30:01,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:30:01,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:30:01,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:30:01,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:30:01,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:30:01,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:30:01,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:30:01,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:30:01,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:30:01,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:30:01,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:30:01,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:30:01,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:30:01,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:30:01,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:30:01,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:30:01,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:30:01,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:30:01,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:30:01,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:30:01,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:30:01,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:30:01,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:30:01,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:30:01,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:30:01,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:30:01,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:30:01,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:30:01,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:30:01,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:30:01,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:30:01,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:30:01,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:30:01,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:30:01,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:30:01,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:30:01,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:30:01,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:30:01,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:30:01,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:30:01,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:30:01,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:30:01,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:30:01,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:30:01,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:30:01,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:30:01,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:30:01,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:30:01,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:30:01,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:30:01,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:30:01,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:30:01,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:30:01,922 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:30:01,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:30:01,922 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:30:01,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:30:01,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:30:01,923 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:30:01,923 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:30:01,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:30:01,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:30:01,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:30:01,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:30:01,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:30:01,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:01,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:30:01,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:30:01,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:30:01,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:30:01,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:30:01,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:30:01,926 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-09 08:30:02,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:30:02,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:30:02,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:30:02,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:30:02,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:30:02,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-09 08:30:02,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/1805379ba/c3142ddf273642789493e66e9fc6ebe8/FLAG28d3bdc40 [2021-11-09 08:30:03,056 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:30:03,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-09 08:30:03,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/1805379ba/c3142ddf273642789493e66e9fc6ebe8/FLAG28d3bdc40 [2021-11-09 08:30:03,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/data/1805379ba/c3142ddf273642789493e66e9fc6ebe8 [2021-11-09 08:30:03,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:30:03,310 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:30:03,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:03,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:30:03,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:30:03,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a74167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03, skipping insertion in model container [2021-11-09 08:30:03,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:30:03,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:30:03,704 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-09 08:30:03,727 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-09 08:30:03,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-09 08:30:03,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:03,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:30:03,800 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-09 08:30:03,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-09 08:30:03,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-09 08:30:03,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:03,847 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:30:03,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03 WrapperNode [2021-11-09 08:30:03,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:03,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:30:03,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:30:03,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:30:03,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:30:03,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:30:03,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:30:03,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:30:03,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:30:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:30:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:30:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:30:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:30:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:30:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:30:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:30:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:30:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:30:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:30:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:30:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:30:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:30:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:30:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:30:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:30:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:30:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:30:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:30:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:30:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:30:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:30:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:30:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:30:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:30:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:30:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:30:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:30:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:30:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:30:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:30:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:30:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:30:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:30:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:30:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:30:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:30:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-09 08:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:30:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:30:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:30:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:30:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:30:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:30:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:30:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:30:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:30:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:30:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:30:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:30:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:30:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 08:30:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:30:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:30:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:30:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:30:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:30:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:30:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:30:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:30:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:30:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:30:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:30:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:30:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:30:04,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:04,899 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-09 08:30:04,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:04 BoogieIcfgContainer [2021-11-09 08:30:04,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:04,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:04,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:04,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:04,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:30:03" (1/3) ... [2021-11-09 08:30:04,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0f779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:04, skipping insertion in model container [2021-11-09 08:30:04,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (2/3) ... [2021-11-09 08:30:04,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0f779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:04, skipping insertion in model container [2021-11-09 08:30:04,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:04" (3/3) ... [2021-11-09 08:30:04,910 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-09 08:30:04,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:04,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-09 08:30:04,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:04,970 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 [2021-11-09 08:30:04,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-09 08:30:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 08:30:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:30:04,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:04,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-11-09 08:30:05,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:05,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25732346] [2021-11-09 08:30:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:05,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:05,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:30:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,254 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 [2021-11-09 08:30:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:05,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25732346] [2021-11-09 08:30:05,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25732346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:05,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:05,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:05,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157256714] [2021-11-09 08:30:05,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:05,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:05,327 INFO L87 Difference]: Start difference. First operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:05,603 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-11-09 08:30:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:30:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:05,615 INFO L225 Difference]: With dead ends: 125 [2021-11-09 08:30:05,616 INFO L226 Difference]: Without dead ends: 121 [2021-11-09 08:30:05,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-09 08:30:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-11-09 08:30:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-11-09 08:30:05,696 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-11-09 08:30:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:05,697 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-11-09 08:30:05,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-11-09 08:30:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:30:05,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:05,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:05,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 08:30:05,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:05,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:05,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-11-09 08:30:05,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:05,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463482813] [2021-11-09 08:30:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:05,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:30:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,073 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 [2021-11-09 08:30:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:06,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463482813] [2021-11-09 08:30:06,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463482813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:06,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:06,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:30:06,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682169082] [2021-11-09 08:30:06,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:06,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:06,165 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:06,545 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-11-09 08:30:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:30:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:06,549 INFO L225 Difference]: With dead ends: 135 [2021-11-09 08:30:06,549 INFO L226 Difference]: Without dead ends: 135 [2021-11-09 08:30:06,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-09 08:30:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-11-09 08:30:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.75) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-11-09 08:30:06,578 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-11-09 08:30:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:06,579 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-11-09 08:30:06,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-11-09 08:30:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 08:30:06,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:06,582 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:06,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:06,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:06,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-11-09 08:30:06,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:06,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456173895] [2021-11-09 08:30:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:06,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:06,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:30:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,000 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 [2021-11-09 08:30:07,059 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-09 08:30:07,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-09 08:30:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:07,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:07,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:07,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456173895] [2021-11-09 08:30:07,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456173895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:07,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:07,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:30:07,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108793275] [2021-11-09 08:30:07,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:07,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:07,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:07,150 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:07,552 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-11-09 08:30:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-09 08:30:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:07,556 INFO L225 Difference]: With dead ends: 129 [2021-11-09 08:30:07,556 INFO L226 Difference]: Without dead ends: 129 [2021-11-09 08:30:07,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-09 08:30:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-11-09 08:30:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-11-09 08:30:07,567 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-11-09 08:30:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:07,568 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-11-09 08:30:07,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-11-09 08:30:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 08:30:07,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:07,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:07,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-09 08:30:07,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:07,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-11-09 08:30:07,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:07,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283044437] [2021-11-09 08:30:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:07,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:07,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:07,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:30:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:08,025 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 [2021-11-09 08:30:08,033 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 [2021-11-09 08:30:08,154 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:30:08,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-09 08:30:08,173 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 08:30:08,174 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 29 treesize of output 29 [2021-11-09 08:30:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:08,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:11,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:11,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283044437] [2021-11-09 08:30:11,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283044437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:11,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:11,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:30:11,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179127212] [2021-11-09 08:30:11,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:30:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:30:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-09 08:30:11,367 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:27,976 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2021-11-09 08:30:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:30:27,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-09 08:30:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:27,979 INFO L225 Difference]: With dead ends: 160 [2021-11-09 08:30:27,979 INFO L226 Difference]: Without dead ends: 160 [2021-11-09 08:30:27,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=58, Invalid=96, Unknown=2, NotChecked=0, Total=156 [2021-11-09 08:30:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-09 08:30:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 111. [2021-11-09 08:30:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 107 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-11-09 08:30:27,992 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-11-09 08:30:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:27,993 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-11-09 08:30:27,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-11-09 08:30:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:30:27,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:27,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:28,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:28,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:28,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-11-09 08:30:28,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:28,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426473565] [2021-11-09 08:30:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:28,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:28,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:28,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:28,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:30:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:28,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:28,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:28,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:28,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426473565] [2021-11-09 08:30:28,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426473565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:28,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:28,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:30:28,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78751203] [2021-11-09 08:30:28,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:28,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:28,487 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:28,842 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-11-09 08:30:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-09 08:30:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:28,845 INFO L225 Difference]: With dead ends: 132 [2021-11-09 08:30:28,845 INFO L226 Difference]: Without dead ends: 132 [2021-11-09 08:30:28,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-09 08:30:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-11-09 08:30:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 105 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-11-09 08:30:28,855 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-11-09 08:30:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:28,855 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-11-09 08:30:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-11-09 08:30:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:30:28,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:28,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:28,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:29,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:29,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:29,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-11-09 08:30:29,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:29,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095108718] [2021-11-09 08:30:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:29,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:29,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:29,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:30:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:29,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:29,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:29,250 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 [2021-11-09 08:30:29,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-09 08:30:29,327 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 21 treesize of output 13 [2021-11-09 08:30:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:29,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:29,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:29,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095108718] [2021-11-09 08:30:29,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095108718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:29,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:29,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 08:30:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850782790] [2021-11-09 08:30:29,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:29,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:29,446 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:30,089 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-11-09 08:30:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:30:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 08:30:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:30,091 INFO L225 Difference]: With dead ends: 112 [2021-11-09 08:30:30,091 INFO L226 Difference]: Without dead ends: 112 [2021-11-09 08:30:30,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:30:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-09 08:30:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-11-09 08:30:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 104 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-11-09 08:30:30,100 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-11-09 08:30:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:30,101 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-11-09 08:30:30,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-11-09 08:30:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:30:30,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:30,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:30,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:30,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:30,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-11-09 08:30:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:30,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683458672] [2021-11-09 08:30:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:30,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:30,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:30,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:30:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:30,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:30:30,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:30,528 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 [2021-11-09 08:30:30,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:30:30,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 08:30:30,644 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 31 treesize of output 23 [2021-11-09 08:30:30,650 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 20 treesize of output 12 [2021-11-09 08:30:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:30,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:31,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:31,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683458672] [2021-11-09 08:30:31,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683458672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:31,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:31,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-09 08:30:31,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182311875] [2021-11-09 08:30:31,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:30:31,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:30:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:30:31,161 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:33,367 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-11-09 08:30:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:30:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 08:30:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:33,369 INFO L225 Difference]: With dead ends: 127 [2021-11-09 08:30:33,369 INFO L226 Difference]: Without dead ends: 127 [2021-11-09 08:30:33,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:30:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-09 08:30:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-11-09 08:30:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-11-09 08:30:33,375 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-11-09 08:30:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:33,376 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-11-09 08:30:33,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-11-09 08:30:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:30:33,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:33,377 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:33,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-09 08:30:33,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:33,587 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-11-09 08:30:33,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:33,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545137355] [2021-11-09 08:30:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:33,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:33,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:33,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:33,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:30:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:33,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:33,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:33,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 08:30:33,868 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 [2021-11-09 08:30:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:33,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:33,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:33,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545137355] [2021-11-09 08:30:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545137355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:33,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:33,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 08:30:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587137505] [2021-11-09 08:30:33,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:33,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:33,963 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:34,536 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-09 08:30:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:30:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:34,538 INFO L225 Difference]: With dead ends: 166 [2021-11-09 08:30:34,538 INFO L226 Difference]: Without dead ends: 166 [2021-11-09 08:30:34,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:30:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-09 08:30:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-11-09 08:30:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-11-09 08:30:34,545 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-11-09 08:30:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:34,546 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-11-09 08:30:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-11-09 08:30:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 08:30:34,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:34,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:34,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:34,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:34,757 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-11-09 08:30:34,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-11-09 08:30:34,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:34,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440411369] [2021-11-09 08:30:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:34,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:34,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:34,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:34,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:30:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:34,904 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:34,978 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-09 08:30:34,985 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:30:34,987 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:30:34,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-09 08:30:34,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-09 08:30:34,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-09 08:30:34,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-09 08:30:34,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-09 08:30:34,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-09 08:30:34,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-09 08:30:34,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-09 08:30:34,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-09 08:30:34,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-09 08:30:34,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-09 08:30:34,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-09 08:30:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-09 08:30:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-09 08:30:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-09 08:30:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-09 08:30:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-09 08:30:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-09 08:30:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-09 08:30:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-09 08:30:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-09 08:30:34,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-09 08:30:34,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:30:35,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-09 08:30:35,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-09 08:30:35,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-11-09 08:30:35,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-09 08:30:35,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-09 08:30:35,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-11-09 08:30:35,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-11-09 08:30:35,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-11-09 08:30:35,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-11-09 08:30:35,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-11-09 08:30:35,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-11-09 08:30:35,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-11-09 08:30:35,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-11-09 08:30:35,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-11-09 08:30:35,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-11-09 08:30:35,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-11-09 08:30:35,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-11-09 08:30:35,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-11-09 08:30:35,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-11-09 08:30:35,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-11-09 08:30:35,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-11-09 08:30:35,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:30:35,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 08:30:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:35,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:35,231 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:35,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:30:35,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:30:35 BoogieIcfgContainer [2021-11-09 08:30:35,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:30:35,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:30:35,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:30:35,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:30:35,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:04" (3/4) ... [2021-11-09 08:30:35,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:30:35,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:30:35,270 INFO L168 Benchmark]: Toolchain (without parser) took 31960.37 ms. Allocated memory was 60.8 MB in the beginning and 98.6 MB in the end (delta: 37.7 MB). Free memory was 40.1 MB in the beginning and 36.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:35,271 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:30:35,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.34 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 52.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:35,272 INFO L168 Benchmark]: Boogie Preprocessor took 77.47 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 48.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:35,272 INFO L168 Benchmark]: RCFGBuilder took 974.18 ms. Allocated memory is still 75.5 MB. Free memory was 48.8 MB in the beginning and 41.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:35,273 INFO L168 Benchmark]: TraceAbstraction took 30360.92 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 40.9 MB in the beginning and 36.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:35,273 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 98.6 MB. Free memory was 36.3 MB in the beginning and 36.0 MB in the end (delta: 281.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:30:35,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.34 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 52.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.47 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 48.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 974.18 ms. Allocated memory is still 75.5 MB. Free memory was 48.8 MB in the beginning and 41.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30360.92 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 40.9 MB in the beginning and 36.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.87 ms. Allocated memory is still 98.6 MB. Free memory was 36.3 MB in the beginning and 36.0 MB in the end (delta: 281.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 30.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 964 SDslu, 896 SDs, 0 SdLazy, 1422 SolverSat, 118 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 52, 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, 8 MinimizatonAttempts, 185 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 5 QuantifiedInterpolants, 873 SizeOfPredicates, 23 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-09 08:30:35,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3db06ad-e633-4fae-a911-967dd2e9622f/bin/uautomizer-IVEQpCNsaX/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 Result: UNKNOWN: Overapproximated counterexample