./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:15:56,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:15:56,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:15:56,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:15:56,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:15:56,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:15:56,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:15:56,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:15:56,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:15:56,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:15:56,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:15:56,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:15:56,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:15:56,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:15:56,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:15:56,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:15:56,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:15:56,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:15:56,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:15:56,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:15:56,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:15:56,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:15:56,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:15:56,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:15:56,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:15:56,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:15:56,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:15:56,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:15:56,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:15:56,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:15:56,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:15:56,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:15:56,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:15:56,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:15:56,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:15:56,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:15:56,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:15:56,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:15:56,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:15:56,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:15:56,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:15:56,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:15:56,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:15:56,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:15:56,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:15:56,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:15:56,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:15:56,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:15:56,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:15:56,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:15:56,640 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:15:56,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:15:56,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:15:56,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:15:56,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:15:56,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:15:56,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:15:56,642 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:15:56,643 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:15:56,643 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:15:56,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:15:56,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:15:56,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:15:56,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:15:56,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:15:56,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:15:56,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:15:56,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:15:56,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:15:56,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:15:56,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:15:56,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:15:56,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:15:56,646 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_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-11-19 05:15:57,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:15:57,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:15:57,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:15:57,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:15:57,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:15:57,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-11-19 05:15:57,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/d80c13810/5c944ee79d5449ac930a5146553f13b2/FLAGb7dbe1fc0 [2021-11-19 05:15:57,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:15:57,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-11-19 05:15:57,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/d80c13810/5c944ee79d5449ac930a5146553f13b2/FLAGb7dbe1fc0 [2021-11-19 05:15:58,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/d80c13810/5c944ee79d5449ac930a5146553f13b2 [2021-11-19 05:15:58,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:15:58,152 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:15:58,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:15:58,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:15:58,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:15:58,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f59f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58, skipping insertion in model container [2021-11-19 05:15:58,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:15:58,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:15:58,604 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:15:58,615 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:15:58,665 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:15:58,701 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:15:58,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58 WrapperNode [2021-11-19 05:15:58,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:15:58,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:15:58,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:15:58,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:15:58,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:15:58,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:15:58,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:15:58,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:15:58,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (1/1) ... [2021-11-19 05:15:58,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:15:58,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:15:58,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:15:58,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:15:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:15:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:15:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:15:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:15:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:15:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:15:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:15:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:15:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-11-19 05:15:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-11-19 05:15:58,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:15:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:15:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:15:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:15:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:15:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:15:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:15:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:15:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:15:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:15:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:15:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:15:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:15:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:15:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:15:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:15:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:15:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:15:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:15:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:15:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:15:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:15:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:15:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:15:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:15:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:15:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:15:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:15:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:15:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:15:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:15:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:15:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:15:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:15:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:15:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:15:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:15:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:15:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:15:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:15:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:15:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:15:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:15:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:15:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:15:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:15:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:15:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:15:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:15:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:15:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:15:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:15:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:15:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:15:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:15:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:15:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:15:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:15:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:15:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:15:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:15:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:15:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:15:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:15:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:15:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:15:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:15:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:15:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-11-19 05:15:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:15:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:15:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:15:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-11-19 05:15:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:15:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:15:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:15:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:15:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:15:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:15:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:15:59,314 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:15:59,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:15:59,736 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:15:59,749 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:15:59,751 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:15:59,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:59 BoogieIcfgContainer [2021-11-19 05:15:59,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:15:59,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:15:59,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:15:59,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:15:59,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:58" (1/3) ... [2021-11-19 05:15:59,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6706f717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:59, skipping insertion in model container [2021-11-19 05:15:59,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:58" (2/3) ... [2021-11-19 05:15:59,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6706f717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:59, skipping insertion in model container [2021-11-19 05:15:59,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:59" (3/3) ... [2021-11-19 05:15:59,769 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-11-19 05:15:59,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:15:59,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-19 05:15:59,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:15:59,849 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:15:59,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-19 05:15:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:15:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:15:59,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:15:59,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:15:59,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:15:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:15:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1846299228, now seen corresponding path program 1 times [2021-11-19 05:15:59,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:15:59,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824397219] [2021-11-19 05:15:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:15:59,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:00,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:00,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:00,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824397219] [2021-11-19 05:16:00,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824397219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:00,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:00,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:16:00,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020515904] [2021-11-19 05:16:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:16:00,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:16:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:00,319 INFO L87 Difference]: Start difference. First operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:00,593 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-11-19 05:16:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:16:00,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 8 [2021-11-19 05:16:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:00,608 INFO L225 Difference]: With dead ends: 92 [2021-11-19 05:16:00,608 INFO L226 Difference]: Without dead ends: 89 [2021-11-19 05:16:00,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:00,615 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:00,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 84 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-19 05:16:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2021-11-19 05:16:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 65 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:16:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-11-19 05:16:00,668 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 8 [2021-11-19 05:16:00,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:00,668 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-11-19 05:16:00,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-11-19 05:16:00,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:16:00,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:00,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:00,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:16:00,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash 451849005, now seen corresponding path program 1 times [2021-11-19 05:16:00,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:00,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209070739] [2021-11-19 05:16:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:00,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:00,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:00,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209070739] [2021-11-19 05:16:00,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209070739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:00,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:16:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163102994] [2021-11-19 05:16:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:00,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:00,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:00,830 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-19 05:16:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:01,172 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-11-19 05:16:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-11-19 05:16:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:01,174 INFO L225 Difference]: With dead ends: 91 [2021-11-19 05:16:01,174 INFO L226 Difference]: Without dead ends: 91 [2021-11-19 05:16:01,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:01,176 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 18 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:01,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 146 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-19 05:16:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2021-11-19 05:16:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 66 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:16:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-11-19 05:16:01,199 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 10 [2021-11-19 05:16:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:01,199 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-11-19 05:16:01,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-19 05:16:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-11-19 05:16:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:16:01,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:01,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:01,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:16:01,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 451908587, now seen corresponding path program 1 times [2021-11-19 05:16:01,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:01,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533244088] [2021-11-19 05:16:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:01,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:01,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:01,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533244088] [2021-11-19 05:16:01,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533244088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:01,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:01,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:16:01,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855669119] [2021-11-19 05:16:01,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:01,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:01,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:01,468 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-19 05:16:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:01,840 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2021-11-19 05:16:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 10 [2021-11-19 05:16:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:01,853 INFO L225 Difference]: With dead ends: 135 [2021-11-19 05:16:01,855 INFO L226 Difference]: Without dead ends: 135 [2021-11-19 05:16:01,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:01,859 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 81 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:01,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 157 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:16:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-19 05:16:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 108. [2021-11-19 05:16:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.8311688311688312) internal successors, (141), 99 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-19 05:16:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-11-19 05:16:01,885 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 10 [2021-11-19 05:16:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:01,886 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-11-19 05:16:01,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-19 05:16:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2021-11-19 05:16:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:16:01,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:01,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:01,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:16:01,888 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1124262917, now seen corresponding path program 1 times [2021-11-19 05:16:01,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:01,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500462001] [2021-11-19 05:16:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:01,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:02,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:02,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500462001] [2021-11-19 05:16:02,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500462001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:02,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:02,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:16:02,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614850056] [2021-11-19 05:16:02,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:02,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:02,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:02,013 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (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) [2021-11-19 05:16:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:02,341 INFO L93 Difference]: Finished difference Result 149 states and 214 transitions. [2021-11-19 05:16:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:16:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 05:16:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:02,347 INFO L225 Difference]: With dead ends: 149 [2021-11-19 05:16:02,347 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 05:16:02,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:02,349 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 76 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:02,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 89 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 05:16:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-11-19 05:16:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 89 states have (on average 1.7752808988764044) internal successors, (158), 115 states have internal predecessors, (158), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-19 05:16:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2021-11-19 05:16:02,380 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 11 [2021-11-19 05:16:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:02,381 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2021-11-19 05:16:02,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (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) [2021-11-19 05:16:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2021-11-19 05:16:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:16:02,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:02,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:02,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:16:02,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:02,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash 649350680, now seen corresponding path program 1 times [2021-11-19 05:16:02,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:02,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38459340] [2021-11-19 05:16:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:02,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:02,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:02,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38459340] [2021-11-19 05:16:02,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38459340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:02,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:02,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:16:02,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215535360] [2021-11-19 05:16:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:02,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:16:02,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:16:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:02,548 INFO L87 Difference]: Start difference. First operand 126 states and 183 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:02,885 INFO L93 Difference]: Finished difference Result 174 states and 254 transitions. [2021-11-19 05:16:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:16:02,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:16:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:02,892 INFO L225 Difference]: With dead ends: 174 [2021-11-19 05:16:02,892 INFO L226 Difference]: Without dead ends: 174 [2021-11-19 05:16:02,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:16:02,905 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 46 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:02,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 241 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-19 05:16:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-11-19 05:16:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 139 states have internal predecessors, (199), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-19 05:16:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 232 transitions. [2021-11-19 05:16:02,946 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 232 transitions. Word has length 13 [2021-11-19 05:16:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:02,947 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 232 transitions. [2021-11-19 05:16:02,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 232 transitions. [2021-11-19 05:16:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:16:02,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:02,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:02,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:16:02,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609254, now seen corresponding path program 1 times [2021-11-19 05:16:02,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:02,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947121972] [2021-11-19 05:16:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:02,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:03,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:03,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947121972] [2021-11-19 05:16:03,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947121972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:03,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:03,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:16:03,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144167168] [2021-11-19 05:16:03,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:03,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:03,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:03,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:03,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:03,063 INFO L87 Difference]: Start difference. First operand 153 states and 232 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:03,433 INFO L93 Difference]: Finished difference Result 265 states and 403 transitions. [2021-11-19 05:16:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:03,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:16:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:03,438 INFO L225 Difference]: With dead ends: 265 [2021-11-19 05:16:03,439 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 05:16:03,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:03,440 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 78 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:03,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 189 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:16:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 05:16:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 238. [2021-11-19 05:16:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 189 states have (on average 1.7195767195767195) internal successors, (325), 216 states have internal predecessors, (325), 17 states have call successors, (17), 12 states have call predecessors, (17), 14 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-19 05:16:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 376 transitions. [2021-11-19 05:16:03,467 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 376 transitions. Word has length 13 [2021-11-19 05:16:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 376 transitions. [2021-11-19 05:16:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 376 transitions. [2021-11-19 05:16:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:16:03,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:03,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:03,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:16:03,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:03,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609253, now seen corresponding path program 1 times [2021-11-19 05:16:03,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:03,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008455174] [2021-11-19 05:16:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:03,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:03,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:03,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008455174] [2021-11-19 05:16:03,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008455174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:03,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:03,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:16:03,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481412877] [2021-11-19 05:16:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:03,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:03,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:03,566 INFO L87 Difference]: Start difference. First operand 238 states and 376 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:03,949 INFO L93 Difference]: Finished difference Result 329 states and 503 transitions. [2021-11-19 05:16:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:16:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:03,953 INFO L225 Difference]: With dead ends: 329 [2021-11-19 05:16:03,954 INFO L226 Difference]: Without dead ends: 329 [2021-11-19 05:16:03,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:03,955 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 77 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:03,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 198 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:16:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-19 05:16:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 305. [2021-11-19 05:16:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 253 states have (on average 1.683794466403162) internal successors, (426), 278 states have internal predecessors, (426), 17 states have call successors, (17), 17 states have call predecessors, (17), 19 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-19 05:16:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 477 transitions. [2021-11-19 05:16:03,994 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 477 transitions. Word has length 13 [2021-11-19 05:16:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 477 transitions. [2021-11-19 05:16:03,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 477 transitions. [2021-11-19 05:16:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:16:03,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:03,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:03,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:16:03,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2140662271, now seen corresponding path program 1 times [2021-11-19 05:16:03,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:03,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011868769] [2021-11-19 05:16:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:03,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:04,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:04,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011868769] [2021-11-19 05:16:04,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011868769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:04,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:04,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:16:04,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063333509] [2021-11-19 05:16:04,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:04,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:16:04,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:16:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:04,092 INFO L87 Difference]: Start difference. First operand 305 states and 477 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:04,335 INFO L93 Difference]: Finished difference Result 270 states and 379 transitions. [2021-11-19 05:16:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:16:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:16:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:04,339 INFO L225 Difference]: With dead ends: 270 [2021-11-19 05:16:04,340 INFO L226 Difference]: Without dead ends: 270 [2021-11-19 05:16:04,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:16:04,341 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 63 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:04,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 224 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-19 05:16:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-11-19 05:16:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 192 states have (on average 1.5989583333333333) internal successors, (307), 211 states have internal predecessors, (307), 14 states have call successors, (14), 14 states have call predecessors, (14), 17 states have return successors, (24), 9 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-19 05:16:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 345 transitions. [2021-11-19 05:16:04,359 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 345 transitions. Word has length 14 [2021-11-19 05:16:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:04,359 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 345 transitions. [2021-11-19 05:16:04,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 345 transitions. [2021-11-19 05:16:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:16:04,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:04,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:04,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:16:04,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash 406451957, now seen corresponding path program 1 times [2021-11-19 05:16:04,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:04,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957673609] [2021-11-19 05:16:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:04,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:16:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:04,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:04,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957673609] [2021-11-19 05:16:04,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957673609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:04,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:04,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:16:04,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466068204] [2021-11-19 05:16:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:04,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:16:04,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:16:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:04,456 INFO L87 Difference]: Start difference. First operand 235 states and 345 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:04,694 INFO L93 Difference]: Finished difference Result 372 states and 523 transitions. [2021-11-19 05:16:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:16:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:16:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:04,699 INFO L225 Difference]: With dead ends: 372 [2021-11-19 05:16:04,699 INFO L226 Difference]: Without dead ends: 372 [2021-11-19 05:16:04,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:16:04,703 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 65 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:04,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 206 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-19 05:16:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 352. [2021-11-19 05:16:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 281 states have (on average 1.519572953736655) internal successors, (427), 312 states have internal predecessors, (427), 24 states have call successors, (24), 24 states have call predecessors, (24), 35 states have return successors, (50), 15 states have call predecessors, (50), 23 states have call successors, (50) [2021-11-19 05:16:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 501 transitions. [2021-11-19 05:16:04,740 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 501 transitions. Word has length 15 [2021-11-19 05:16:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:04,741 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 501 transitions. [2021-11-19 05:16:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 501 transitions. [2021-11-19 05:16:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:16:04,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:04,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:04,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:16:04,744 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1475656894, now seen corresponding path program 1 times [2021-11-19 05:16:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:04,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211518263] [2021-11-19 05:16:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:04,766 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:16:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:04,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:16:04,816 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:16:04,817 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2021-11-19 05:16:04,819 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION (18 of 20 remaining) [2021-11-19 05:16:04,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION (17 of 20 remaining) [2021-11-19 05:16:04,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION (16 of 20 remaining) [2021-11-19 05:16:04,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION (15 of 20 remaining) [2021-11-19 05:16:04,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION (14 of 20 remaining) [2021-11-19 05:16:04,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION (13 of 20 remaining) [2021-11-19 05:16:04,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION (12 of 20 remaining) [2021-11-19 05:16:04,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION (11 of 20 remaining) [2021-11-19 05:16:04,821 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION (10 of 20 remaining) [2021-11-19 05:16:04,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION (9 of 20 remaining) [2021-11-19 05:16:04,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION (8 of 20 remaining) [2021-11-19 05:16:04,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION (7 of 20 remaining) [2021-11-19 05:16:04,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION (6 of 20 remaining) [2021-11-19 05:16:04,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION (5 of 20 remaining) [2021-11-19 05:16:04,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (4 of 20 remaining) [2021-11-19 05:16:04,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (3 of 20 remaining) [2021-11-19 05:16:04,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2021-11-19 05:16:04,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2021-11-19 05:16:04,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2021-11-19 05:16:04,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:16:04,828 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:04,831 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:16:04,853 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-19 05:16:04,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:16:04 BoogieIcfgContainer [2021-11-19 05:16:04,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:16:04,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:16:04,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:16:04,881 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:16:04,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:59" (3/4) ... [2021-11-19 05:16:04,885 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:16:04,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:16:04,886 INFO L158 Benchmark]: Toolchain (without parser) took 6734.08ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 84.2MB in the beginning and 115.9MB in the end (delta: -31.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-11-19 05:16:04,886 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory was 93.3MB in the beginning and 93.3MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:04,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.88ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 89.2MB in the end (delta: -5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:16:04,887 INFO L158 Benchmark]: Boogie Preprocessor took 72.73ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 86.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:16:04,887 INFO L158 Benchmark]: RCFGBuilder took 978.23ms. Allocated memory is still 121.6MB. Free memory was 86.5MB in the beginning and 62.8MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-19 05:16:04,888 INFO L158 Benchmark]: TraceAbstraction took 5121.90ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 62.0MB in the beginning and 117.0MB in the end (delta: -55.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:04,888 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 169.9MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:04,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory was 93.3MB in the beginning and 93.3MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.88ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 89.2MB in the end (delta: -5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.73ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 86.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 978.23ms. Allocated memory is still 121.6MB. Free memory was 86.5MB in the beginning and 62.8MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5121.90ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 62.0MB in the beginning and 117.0MB in the end (delta: -55.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 169.9MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=49, \old(garbage)=58, \old(pc1)=53, \old(pc4)=50, \old(res4)=66, \old(S)=59, \old(S)=62, \old(t1)=56, \old(t1)=68, \old(t4)=63, \old(t4)=57, \old(x1)=67, \old(x1)=65, \old(x4)=52, \old(x4)=55, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 92 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 523 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 522 mSDsluCounter, 1534 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1181 IncrementalHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 825 mSDtfsCounter, 1181 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=9, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 209 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 [2021-11-19 05:16:04,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:16:07,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:16:07,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:16:07,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:16:07,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:16:07,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:16:07,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:16:07,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:16:07,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:16:07,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:16:07,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:16:07,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:16:07,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:16:07,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:16:07,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:16:07,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:16:07,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:16:07,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:16:07,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:16:07,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:16:07,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:16:07,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:16:07,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:16:07,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:16:07,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:16:07,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:16:07,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:16:07,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:16:07,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:16:07,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:16:07,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:16:07,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:16:07,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:16:07,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:16:07,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:16:07,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:16:07,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:16:07,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:16:07,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:16:07,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:16:07,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:16:07,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:16:07,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:16:07,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:16:07,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:16:07,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:16:07,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:16:07,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:16:08,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:16:08,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:16:08,000 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:16:08,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:16:08,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:16:08,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:16:08,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:16:08,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:16:08,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:16:08,004 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:16:08,004 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:16:08,004 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:16:08,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:16:08,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:16:08,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:16:08,006 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:16:08,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:16:08,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:16:08,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:16:08,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:16:08,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:16:08,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:08,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:16:08,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:16:08,009 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:16:08,009 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:16:08,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:16:08,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:16:08,010 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_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-11-19 05:16:08,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:16:08,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:16:08,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:16:08,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:16:08,557 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:16:08,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-11-19 05:16:08,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/e021bc76b/2a108fa03c1b44a7803bd5baadcdb1a3/FLAG2bc164ea0 [2021-11-19 05:16:09,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:16:09,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-11-19 05:16:09,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/e021bc76b/2a108fa03c1b44a7803bd5baadcdb1a3/FLAG2bc164ea0 [2021-11-19 05:16:09,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/data/e021bc76b/2a108fa03c1b44a7803bd5baadcdb1a3 [2021-11-19 05:16:09,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:16:09,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:16:09,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:09,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:16:09,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:16:09,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:09" (1/1) ... [2021-11-19 05:16:09,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e967aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:09, skipping insertion in model container [2021-11-19 05:16:09,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:09" (1/1) ... [2021-11-19 05:16:09,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:16:09,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:16:09,946 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:09,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:16:10,064 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:10,120 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:16:10,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10 WrapperNode [2021-11-19 05:16:10,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:10,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:16:10,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:16:10,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:16:10,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:16:10,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:16:10,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:16:10,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:16:10,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (1/1) ... [2021-11-19 05:16:10,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:16:10,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:16:10,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:16:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:16:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:16:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:16:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:16:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:16:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:16:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:16:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:16:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:16:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-11-19 05:16:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-11-19 05:16:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:16:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:16:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:16:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:16:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:16:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:16:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:16:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:16:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:16:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:16:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:16:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:16:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:16:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:16:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:16:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:16:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:16:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:16:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:16:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:16:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:16:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:16:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:16:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:16:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:16:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:16:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:16:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:16:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:16:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:16:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:16:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:16:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:16:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:16:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:16:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:16:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:16:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:16:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:16:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:16:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:16:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:16:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:16:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:16:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:16:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:16:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:16:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:16:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:16:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:16:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:16:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:16:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:16:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:16:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:16:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:16:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:16:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:16:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:16:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:16:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:16:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:16:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:16:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:16:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:16:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:16:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:16:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:16:10,692 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:16:10,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:16:11,210 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:16:11,224 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:16:11,224 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:16:11,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:11 BoogieIcfgContainer [2021-11-19 05:16:11,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:16:11,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:16:11,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:16:11,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:16:11,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:09" (1/3) ... [2021-11-19 05:16:11,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419786e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:11, skipping insertion in model container [2021-11-19 05:16:11,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:10" (2/3) ... [2021-11-19 05:16:11,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419786e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:11, skipping insertion in model container [2021-11-19 05:16:11,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:11" (3/3) ... [2021-11-19 05:16:11,265 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-11-19 05:16:11,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:16:11,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-19 05:16:11,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:16:11,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:16:11,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-19 05:16:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:16:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:16:11,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:11,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:11,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash 913050877, now seen corresponding path program 1 times [2021-11-19 05:16:11,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:11,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755453813] [2021-11-19 05:16:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:11,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:11,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:11,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:16:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:16:11,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:11,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:11,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:11,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755453813] [2021-11-19 05:16:11,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755453813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:11,815 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:11,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:16:11,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25999625] [2021-11-19 05:16:11,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:11,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:16:11,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:16:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:16:11,876 INFO L87 Difference]: Start difference. First operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:11,908 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-11-19 05:16:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:16:11,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 8 [2021-11-19 05:16:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:11,927 INFO L225 Difference]: With dead ends: 72 [2021-11-19 05:16:11,927 INFO L226 Difference]: Without dead ends: 69 [2021-11-19 05:16:11,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:16:11,935 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:11,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:16:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-19 05:16:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-19 05:16:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 63 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:16:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-11-19 05:16:12,007 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2021-11-19 05:16:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:12,008 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-11-19 05:16:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-11-19 05:16:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:16:12,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:12,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:12,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:12,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:12,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 913039345, now seen corresponding path program 1 times [2021-11-19 05:16:12,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:12,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210837469] [2021-11-19 05:16:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:12,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:12,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:12,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:16:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:12,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:16:12,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:12,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:12,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:12,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210837469] [2021-11-19 05:16:12,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210837469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:12,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:12,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:16:12,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479259732] [2021-11-19 05:16:12,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:12,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:16:12,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:16:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:12,636 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:12,733 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2021-11-19 05:16:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:16:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 8 [2021-11-19 05:16:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:12,742 INFO L225 Difference]: With dead ends: 120 [2021-11-19 05:16:12,743 INFO L226 Difference]: Without dead ends: 120 [2021-11-19 05:16:12,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:12,748 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 67 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:12,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 151 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:16:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-19 05:16:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2021-11-19 05:16:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.8732394366197183) internal successors, (133), 93 states have internal predecessors, (133), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-19 05:16:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2021-11-19 05:16:12,789 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 8 [2021-11-19 05:16:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:12,791 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2021-11-19 05:16:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 05:16:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2021-11-19 05:16:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:16:12,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:12,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:12,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:13,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:13,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1760552785, now seen corresponding path program 1 times [2021-11-19 05:16:13,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:13,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468136124] [2021-11-19 05:16:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:13,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:13,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:13,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:16:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:13,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:16:13,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:13,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:13,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:13,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468136124] [2021-11-19 05:16:13,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468136124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:13,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:13,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:16:13,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246169037] [2021-11-19 05:16:13,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:13,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:16:13,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:13,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:16:13,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:13,276 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-19 05:16:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:13,441 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-11-19 05:16:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:16:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2021-11-19 05:16:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:13,444 INFO L225 Difference]: With dead ends: 128 [2021-11-19 05:16:13,445 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 05:16:13,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:13,446 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:13,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:16:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 05:16:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2021-11-19 05:16:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 104 states have internal predecessors, (143), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-19 05:16:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-11-19 05:16:13,465 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 9 [2021-11-19 05:16:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:13,465 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-11-19 05:16:13,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-19 05:16:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-11-19 05:16:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:16:13,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:13,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:13,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:13,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:13,686 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 370381771, now seen corresponding path program 1 times [2021-11-19 05:16:13,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:13,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583622284] [2021-11-19 05:16:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:13,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:13,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:13,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:16:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:16:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:13,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:16:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:13,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:13,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:13,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583622284] [2021-11-19 05:16:13,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583622284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:13,987 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:13,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:16:13,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803111277] [2021-11-19 05:16:13,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:13,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:16:13,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:16:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:13,990 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:14,191 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2021-11-19 05:16:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:16:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 05:16:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:14,201 INFO L225 Difference]: With dead ends: 198 [2021-11-19 05:16:14,201 INFO L226 Difference]: Without dead ends: 198 [2021-11-19 05:16:14,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:16:14,203 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 71 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:14,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 188 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:16:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-19 05:16:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 177. [2021-11-19 05:16:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 134 states have (on average 1.7761194029850746) internal successors, (238), 160 states have internal predecessors, (238), 14 states have call successors, (14), 10 states have call predecessors, (14), 11 states have return successors, (24), 7 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-19 05:16:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2021-11-19 05:16:14,244 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 11 [2021-11-19 05:16:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2021-11-19 05:16:14,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2021-11-19 05:16:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:16:14,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:14,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:14,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:14,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:14,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash 370381772, now seen corresponding path program 1 times [2021-11-19 05:16:14,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:14,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342654111] [2021-11-19 05:16:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:14,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:14,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:14,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:16:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:16:14,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:14,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:16:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:14,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:14,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:14,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342654111] [2021-11-19 05:16:14,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342654111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:14,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:14,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:16:14,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064440881] [2021-11-19 05:16:14,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:14,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:14,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:14,791 INFO L87 Difference]: Start difference. First operand 177 states and 276 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:15,176 INFO L93 Difference]: Finished difference Result 333 states and 499 transitions. [2021-11-19 05:16:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:16:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 05:16:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:15,181 INFO L225 Difference]: With dead ends: 333 [2021-11-19 05:16:15,181 INFO L226 Difference]: Without dead ends: 333 [2021-11-19 05:16:15,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:15,182 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 203 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:15,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 248 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:16:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-19 05:16:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 295. [2021-11-19 05:16:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 242 states have (on average 1.7314049586776858) internal successors, (419), 268 states have internal predecessors, (419), 18 states have call successors, (18), 18 states have call predecessors, (18), 19 states have return successors, (35), 9 states have call predecessors, (35), 17 states have call successors, (35) [2021-11-19 05:16:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 472 transitions. [2021-11-19 05:16:15,212 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 472 transitions. Word has length 11 [2021-11-19 05:16:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:15,212 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 472 transitions. [2021-11-19 05:16:15,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 472 transitions. [2021-11-19 05:16:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:16:15,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:15,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:15,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:15,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:15,426 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1403059964, now seen corresponding path program 1 times [2021-11-19 05:16:15,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:15,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172647057] [2021-11-19 05:16:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:15,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:15,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:15,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:16:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:15,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:16:15,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:15,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:15,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:15,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172647057] [2021-11-19 05:16:15,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172647057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:15,698 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:15,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:16:15,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008150464] [2021-11-19 05:16:15,699 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:15,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:15,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:15,701 INFO L87 Difference]: Start difference. First operand 295 states and 472 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:15,745 INFO L93 Difference]: Finished difference Result 212 states and 298 transitions. [2021-11-19 05:16:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 05:16:15,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:15,748 INFO L225 Difference]: With dead ends: 212 [2021-11-19 05:16:15,749 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 05:16:15,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:16:15,750 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 56 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:15,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 217 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:16:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 05:16:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 181. [2021-11-19 05:16:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 162 states have internal predecessors, (241), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2021-11-19 05:16:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2021-11-19 05:16:15,765 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 12 [2021-11-19 05:16:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:15,766 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2021-11-19 05:16:15,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2021-11-19 05:16:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:16:15,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:15,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:15,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:15,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:15,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2074754906, now seen corresponding path program 1 times [2021-11-19 05:16:15,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:15,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817593303] [2021-11-19 05:16:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:15,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:15,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:15,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:15,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:16:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:16,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:16:16,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:16,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:16,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:16,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817593303] [2021-11-19 05:16:16,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817593303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:16,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:16,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:16:16,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562109380] [2021-11-19 05:16:16,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:16,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:16:16,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:16:16,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:16:16,264 INFO L87 Difference]: Start difference. First operand 181 states and 271 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:16,314 INFO L93 Difference]: Finished difference Result 281 states and 404 transitions. [2021-11-19 05:16:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:16:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:16:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:16,318 INFO L225 Difference]: With dead ends: 281 [2021-11-19 05:16:16,318 INFO L226 Difference]: Without dead ends: 281 [2021-11-19 05:16:16,319 INFO L932 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 [2021-11-19 05:16:16,320 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 58 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:16,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 179 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:16:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-19 05:16:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-11-19 05:16:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 216 states have (on average 1.5648148148148149) internal successors, (338), 246 states have internal predecessors, (338), 22 states have call successors, (22), 22 states have call predecessors, (22), 31 states have return successors, (44), 13 states have call predecessors, (44), 21 states have call successors, (44) [2021-11-19 05:16:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2021-11-19 05:16:16,339 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 13 [2021-11-19 05:16:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:16,340 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2021-11-19 05:16:16,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2021-11-19 05:16:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:16:16,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:16,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:16,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:16,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:16,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-19 05:16:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1772709125, now seen corresponding path program 1 times [2021-11-19 05:16:16,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:16,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212443790] [2021-11-19 05:16:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:16,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:16,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:16,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:16:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:16,711 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:16:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:16,854 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 05:16:16,855 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:16:16,856 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2021-11-19 05:16:16,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION (18 of 20 remaining) [2021-11-19 05:16:16,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION (17 of 20 remaining) [2021-11-19 05:16:16,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION (16 of 20 remaining) [2021-11-19 05:16:16,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION (15 of 20 remaining) [2021-11-19 05:16:16,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION (14 of 20 remaining) [2021-11-19 05:16:16,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION (13 of 20 remaining) [2021-11-19 05:16:16,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION (12 of 20 remaining) [2021-11-19 05:16:16,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION (11 of 20 remaining) [2021-11-19 05:16:16,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION (10 of 20 remaining) [2021-11-19 05:16:16,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION (9 of 20 remaining) [2021-11-19 05:16:16,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION (8 of 20 remaining) [2021-11-19 05:16:16,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION (7 of 20 remaining) [2021-11-19 05:16:16,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION (6 of 20 remaining) [2021-11-19 05:16:16,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION (5 of 20 remaining) [2021-11-19 05:16:16,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (4 of 20 remaining) [2021-11-19 05:16:16,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (3 of 20 remaining) [2021-11-19 05:16:16,863 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2021-11-19 05:16:16,863 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2021-11-19 05:16:16,863 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2021-11-19 05:16:16,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:17,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:17,080 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:17,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:16:17,103 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-19 05:16:17,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:16:17 BoogieIcfgContainer [2021-11-19 05:16:17,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:16:17,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:16:17,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:16:17,128 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:16:17,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:11" (3/4) ... [2021-11-19 05:16:17,132 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:16:17,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:16:17,142 INFO L158 Benchmark]: Toolchain (without parser) took 7661.75ms. Allocated memory was 65.0MB in the beginning and 111.1MB in the end (delta: 46.1MB). Free memory was 43.3MB in the beginning and 58.6MB in the end (delta: -15.3MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-11-19 05:16:17,143 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:17,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.06ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 39.8MB in the end (delta: 3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:16:17,144 INFO L158 Benchmark]: Boogie Preprocessor took 122.81ms. Allocated memory is still 65.0MB. Free memory was 39.8MB in the beginning and 36.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 05:16:17,144 INFO L158 Benchmark]: RCFGBuilder took 1005.87ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 36.6MB in the beginning and 72.3MB in the end (delta: -35.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-19 05:16:17,145 INFO L158 Benchmark]: TraceAbstraction took 5870.37ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 71.9MB in the beginning and 58.6MB in the end (delta: 13.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2021-11-19 05:16:17,145 INFO L158 Benchmark]: Witness Printer took 14.09ms. Allocated memory is still 111.1MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:17,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.06ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 39.8MB in the end (delta: 3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 122.81ms. Allocated memory is still 65.0MB. Free memory was 39.8MB in the beginning and 36.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1005.87ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 36.6MB in the beginning and 72.3MB in the end (delta: -35.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5870.37ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 71.9MB in the beginning and 58.6MB in the end (delta: 13.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Witness Printer took 14.09ms. Allocated memory is still 111.1MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=20, \old(pc4)=17, \old(res4)=24, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 96 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 522 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 1160 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 668 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 118 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 8 NumberOfNonLiveVariables, 931 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 [2021-11-19 05:16:17,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd9e145-d3b0-4c0c-a181-b27ee0820d63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample