./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC --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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:19:35,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:19:35,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:19:35,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:19:35,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:19:35,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:19:35,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:19:35,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:19:35,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:19:35,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:19:35,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:19:35,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:19:35,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:19:35,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:19:35,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:19:35,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:19:35,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:19:35,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:19:35,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:19:35,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:19:35,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:19:35,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:19:35,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:19:35,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:19:35,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:19:35,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:19:35,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:19:35,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:19:35,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:19:35,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:19:35,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:19:35,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:19:35,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:19:35,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:19:35,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:19:35,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:19:35,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:19:35,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:19:35,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:19:35,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:19:35,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:19:35,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:19:35,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:19:35,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:19:35,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:19:35,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:19:35,946 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:19:35,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:19:35,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:19:35,947 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:19:35,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:19:35,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:19:35,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:19:35,947 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:19:35,948 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:19:35,948 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:19:35,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:19:35,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:19:35,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:19:35,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:19:35,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:19:35,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:19:35,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:19:35,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:35,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:19:35,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:19:35,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:19:35,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:19:35,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:19:35,951 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_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2021-10-11 00:19:36,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:19:36,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:19:36,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:19:36,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:19:36,311 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:19:36,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-11 00:19:36,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/data/d138fb131/aff1b8b76e5e4a86a3254fe8ec710a17/FLAGdd845d4b8 [2021-10-11 00:19:36,982 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:19:36,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-11 00:19:37,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/data/d138fb131/aff1b8b76e5e4a86a3254fe8ec710a17/FLAGdd845d4b8 [2021-10-11 00:19:37,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/data/d138fb131/aff1b8b76e5e4a86a3254fe8ec710a17 [2021-10-11 00:19:37,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:19:37,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:19:37,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:37,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:19:37,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:19:37,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f1d5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37, skipping insertion in model container [2021-10-11 00:19:37,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:19:37,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:19:37,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:37,787 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:19:37,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:37,925 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:19:37,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37 WrapperNode [2021-10-11 00:19:37,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:37,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:19:37,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:19:37,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:19:37,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:37,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:38,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:38,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... [2021-10-11 00:19:38,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:19:38,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:19:38,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:19:38,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:19:38,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:19:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:19:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-11 00:19:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-11 00:19:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-11 00:19:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-11 00:19:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-11 00:19:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:19:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-11 00:19:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-11 00:19:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-11 00:19:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-11 00:19:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-11 00:19:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-11 00:19:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-11 00:19:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-11 00:19:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-11 00:19:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-11 00:19:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-11 00:19:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-11 00:19:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-11 00:19:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-11 00:19:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-11 00:19:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-11 00:19:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-11 00:19:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-11 00:19:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-11 00:19:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-11 00:19:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-11 00:19:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-11 00:19:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-11 00:19:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-11 00:19:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-11 00:19:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-11 00:19:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-11 00:19:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-11 00:19:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-11 00:19:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-11 00:19:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-11 00:19:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-11 00:19:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-11 00:19:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-11 00:19:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-11 00:19:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-11 00:19:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-11 00:19:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-11 00:19:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-11 00:19:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-11 00:19:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-11 00:19:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-11 00:19:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-11 00:19:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-11 00:19:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-11 00:19:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-11 00:19:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-11 00:19:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-11 00:19:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-11 00:19:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-11 00:19:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-11 00:19:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-11 00:19:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-11 00:19:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-11 00:19:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-11 00:19:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-11 00:19:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-11 00:19:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-11 00:19:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-11 00:19:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-11 00:19:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-11 00:19:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-11 00:19:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-11 00:19:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-11 00:19:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-11 00:19:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-11 00:19:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-11 00:19:38,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-11 00:19:38,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-11 00:19:38,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-11 00:19:38,146 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-11 00:19:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-11 00:19:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-11 00:19:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-11 00:19:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-11 00:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-11 00:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-11 00:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-11 00:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-11 00:19:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-11 00:19:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-11 00:19:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-11 00:19:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-11 00:19:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-11 00:19:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-11 00:19:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-11 00:19:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-11 00:19:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-11 00:19:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-11 00:19:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-11 00:19:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-11 00:19:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-11 00:19:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-11 00:19:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-11 00:19:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-11 00:19:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-11 00:19:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-11 00:19:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-11 00:19:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-11 00:19:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-11 00:19:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-11 00:19:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-11 00:19:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-11 00:19:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-11 00:19:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-11 00:19:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-11 00:19:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-11 00:19:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-11 00:19:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-11 00:19:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:19:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:19:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:19:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:19:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:19:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:19:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:19:38,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:19:38,946 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-11 00:19:38,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:38 BoogieIcfgContainer [2021-10-11 00:19:38,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:19:38,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:19:38,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:19:38,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:19:38,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:19:37" (1/3) ... [2021-10-11 00:19:38,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7dc2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:38, skipping insertion in model container [2021-10-11 00:19:38,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:37" (2/3) ... [2021-10-11 00:19:38,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7dc2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:38, skipping insertion in model container [2021-10-11 00:19:38,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:38" (3/3) ... [2021-10-11 00:19:38,969 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i [2021-10-11 00:19:38,991 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:19:38,997 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2021-10-11 00:19:39,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-11 00:19:39,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:19:39,054 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:19:39,054 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:19:39,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:19:39,055 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:19:39,055 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:19:39,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:19:39,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:19:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-10-11 00:19:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:19:39,084 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:39,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:39,086 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2021-10-11 00:19:39,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:39,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137705681] [2021-10-11 00:19:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:39,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137705681] [2021-10-11 00:19:39,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:39,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:19:39,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483853971] [2021-10-11 00:19:39,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:19:39,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:39,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:19:39,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:19:39,444 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 7 states. [2021-10-11 00:19:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:39,914 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-11 00:19:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:19:39,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-10-11 00:19:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:39,928 INFO L225 Difference]: With dead ends: 125 [2021-10-11 00:19:39,928 INFO L226 Difference]: Without dead ends: 121 [2021-10-11 00:19:39,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:19:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-11 00:19:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 65. [2021-10-11 00:19:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-10-11 00:19:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-10-11 00:19:39,978 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2021-10-11 00:19:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:39,978 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-10-11 00:19:39,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:19:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-10-11 00:19:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:19:39,979 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:39,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:39,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:19:39,980 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953402, now seen corresponding path program 1 times [2021-10-11 00:19:39,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:39,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447435779] [2021-10-11 00:19:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:40,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447435779] [2021-10-11 00:19:40,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:40,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:19:40,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893332273] [2021-10-11 00:19:40,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:19:40,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:40,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:19:40,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:19:40,051 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 4 states. [2021-10-11 00:19:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:40,189 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-10-11 00:19:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:19:40,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:19:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:40,192 INFO L225 Difference]: With dead ends: 60 [2021-10-11 00:19:40,192 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 00:19:40,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:19:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 00:19:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-11 00:19:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 00:19:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-10-11 00:19:40,201 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 11 [2021-10-11 00:19:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:40,201 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-10-11 00:19:40,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:19:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-10-11 00:19:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:19:40,202 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:40,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:40,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:19:40,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2021-10-11 00:19:40,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:40,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896466347] [2021-10-11 00:19:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:40,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896466347] [2021-10-11 00:19:40,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:40,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:19:40,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171858051] [2021-10-11 00:19:40,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:19:40,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:19:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:19:40,383 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2021-10-11 00:19:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:40,596 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-10-11 00:19:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:19:40,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-10-11 00:19:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:40,598 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:19:40,599 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 00:19:40,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:19:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 00:19:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2021-10-11 00:19:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 00:19:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-10-11 00:19:40,607 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 11 [2021-10-11 00:19:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:40,607 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-10-11 00:19:40,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:19:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-10-11 00:19:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:19:40,608 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:40,609 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:40,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:19:40,609 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1271599478, now seen corresponding path program 1 times [2021-10-11 00:19:40,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:40,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671080724] [2021-10-11 00:19:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:19:40,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671080724] [2021-10-11 00:19:40,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:40,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:19:40,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848932334] [2021-10-11 00:19:40,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:19:40,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:40,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:19:40,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:19:40,765 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 4 states. [2021-10-11 00:19:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:40,899 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-10-11 00:19:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:19:40,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 00:19:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:40,902 INFO L225 Difference]: With dead ends: 60 [2021-10-11 00:19:40,903 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 00:19:40,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:19:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 00:19:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-11 00:19:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 00:19:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-10-11 00:19:40,924 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 15 [2021-10-11 00:19:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:40,925 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-10-11 00:19:40,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:19:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-10-11 00:19:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:19:40,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:40,928 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:40,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:19:40,928 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:40,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2080946104, now seen corresponding path program 1 times [2021-10-11 00:19:40,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:40,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787641585] [2021-10-11 00:19:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:41,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787641585] [2021-10-11 00:19:41,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761444394] [2021-10-11 00:19:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:41,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:19:41,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:41,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:19:41,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-10-11 00:19:41,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334750905] [2021-10-11 00:19:41,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:19:41,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:41,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:19:41,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:19:41,394 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 5 states. [2021-10-11 00:19:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:41,507 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-10-11 00:19:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:19:41,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 00:19:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:41,510 INFO L225 Difference]: With dead ends: 109 [2021-10-11 00:19:41,510 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 00:19:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:19:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 00:19:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 66. [2021-10-11 00:19:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 00:19:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-10-11 00:19:41,517 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 15 [2021-10-11 00:19:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:41,518 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-10-11 00:19:41,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:19:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-10-11 00:19:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:19:41,519 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:41,519 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:41,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:41,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash -591541108, now seen corresponding path program 1 times [2021-10-11 00:19:41,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:41,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149833470] [2021-10-11 00:19:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:41,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149833470] [2021-10-11 00:19:41,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499597410] [2021-10-11 00:19:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 00:19:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:42,194 INFO L382 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 8 treesize of output 7 [2021-10-11 00:19:42,196 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:19:42,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:19:42,212 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:19:42,213 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:21 [2021-10-11 00:19:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:42,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:19:42,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2021-10-11 00:19:42,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468454039] [2021-10-11 00:19:42,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:19:42,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:42,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:19:42,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:19:42,292 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2021-10-11 00:19:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:42,796 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-10-11 00:19:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:19:42,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2021-10-11 00:19:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:42,803 INFO L225 Difference]: With dead ends: 123 [2021-10-11 00:19:42,803 INFO L226 Difference]: Without dead ends: 123 [2021-10-11 00:19:42,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:19:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-11 00:19:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 71. [2021-10-11 00:19:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 00:19:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-10-11 00:19:42,830 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 15 [2021-10-11 00:19:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:42,830 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-10-11 00:19:42,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:19:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-10-11 00:19:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:19:42,832 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:42,832 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:43,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:43,058 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:43,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1400887734, now seen corresponding path program 1 times [2021-10-11 00:19:43,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:43,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219390355] [2021-10-11 00:19:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:43,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219390355] [2021-10-11 00:19:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167492082] [2021-10-11 00:19:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:19:43,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:43,367 INFO L382 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 8 treesize of output 7 [2021-10-11 00:19:43,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:19:43,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:19:43,379 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:19:43,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2021-10-11 00:19:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:43,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:19:43,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-11 00:19:43,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850366582] [2021-10-11 00:19:43,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:19:43,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:43,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:19:43,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:19:43,466 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 8 states. [2021-10-11 00:19:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:43,694 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2021-10-11 00:19:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:19:43,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-10-11 00:19:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:43,696 INFO L225 Difference]: With dead ends: 74 [2021-10-11 00:19:43,696 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 00:19:43,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:19:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 00:19:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2021-10-11 00:19:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-10-11 00:19:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2021-10-11 00:19:43,703 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 15 [2021-10-11 00:19:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:43,704 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2021-10-11 00:19:43,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:19:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2021-10-11 00:19:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:19:43,705 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:43,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:43,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:43,919 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502603, now seen corresponding path program 1 times [2021-10-11 00:19:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:43,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192732908] [2021-10-11 00:19:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 00:19:43,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192732908] [2021-10-11 00:19:43,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:43,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:19:43,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336054736] [2021-10-11 00:19:43,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:19:43,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:19:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:19:43,983 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2021-10-11 00:19:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:44,116 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-10-11 00:19:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:19:44,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 00:19:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:44,118 INFO L225 Difference]: With dead ends: 80 [2021-10-11 00:19:44,119 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 00:19:44,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:19:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 00:19:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2021-10-11 00:19:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 00:19:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-10-11 00:19:44,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17 [2021-10-11 00:19:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:44,125 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-10-11 00:19:44,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:19:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-10-11 00:19:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:19:44,126 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:44,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:44,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:19:44,127 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502644, now seen corresponding path program 1 times [2021-10-11 00:19:44,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:44,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005963052] [2021-10-11 00:19:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:19:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:44,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005963052] [2021-10-11 00:19:44,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17836397] [2021-10-11 00:19:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:44,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:19:44,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:44,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:19:44,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-10-11 00:19:44,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786539967] [2021-10-11 00:19:44,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:19:44,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:44,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:19:44,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:19:44,483 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 10 states. [2021-10-11 00:19:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:44,762 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-10-11 00:19:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:19:44,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2021-10-11 00:19:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:44,764 INFO L225 Difference]: With dead ends: 81 [2021-10-11 00:19:44,764 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 00:19:44,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:19:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 00:19:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-10-11 00:19:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 00:19:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-10-11 00:19:44,770 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 17 [2021-10-11 00:19:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:44,770 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-10-11 00:19:44,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:19:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-10-11 00:19:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:19:44,772 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:44,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:19:44,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:44,998 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2021-10-11 00:19:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:44,999 INFO L82 PathProgramCache]: Analyzing trace with hash 94437838, now seen corresponding path program 1 times [2021-10-11 00:19:44,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:44,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644964210] [2021-10-11 00:19:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:19:45,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:19:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:19:45,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:19:45,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:19:45,057 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:19:45,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:19:45,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:19:45 BoogieIcfgContainer [2021-10-11 00:19:45,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:19:45,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:19:45,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:19:45,091 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:19:45,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:38" (3/4) ... [2021-10-11 00:19:45,095 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:19:45,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7a1b1c0-6298-4416-a026-4e58227b1f83/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:19:45,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:19:45,141 INFO L168 Benchmark]: Toolchain (without parser) took 7866.86 ms. Allocated memory was 107.0 MB in the beginning and 174.1 MB in the end (delta: 67.1 MB). Free memory was 66.3 MB in the beginning and 97.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,142 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:45,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.18 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 72.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,143 INFO L168 Benchmark]: Boogie Preprocessor took 87.15 ms. Allocated memory is still 107.0 MB. Free memory was 72.3 MB in the beginning and 69.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,144 INFO L168 Benchmark]: RCFGBuilder took 930.82 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 89.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,144 INFO L168 Benchmark]: TraceAbstraction took 6138.54 ms. Allocated memory was 130.0 MB in the beginning and 174.1 MB in the end (delta: 44.0 MB). Free memory was 89.2 MB in the beginning and 99.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,145 INFO L168 Benchmark]: Witness Printer took 49.03 ms. Allocated memory is still 174.1 MB. Free memory was 99.8 MB in the beginning and 97.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:45,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.18 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 72.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.15 ms. Allocated memory is still 107.0 MB. Free memory was 72.3 MB in the beginning and 69.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 930.82 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 89.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6138.54 ms. Allocated memory was 130.0 MB in the beginning and 174.1 MB in the end (delta: 44.0 MB). Free memory was 89.2 MB in the beginning and 99.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.03 ms. Allocated memory is still 174.1 MB. Free memory was 99.8 MB in the beginning and 97.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (length*sizeof(int))={2:0}, __VERIFIER_nondet_int()=-1, arr={2:0}, i=0, length=1] [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L521] COND FALSE !(i < length) VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, i=0, length=1] [L526] COND TRUE i