./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:15,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:15,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:58:15,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:15,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:15,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:15,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:15,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:15,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:15,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:15,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:15,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:15,952 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:15,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:15,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:15,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:15,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:15,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:15,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:15,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:15,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:15,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:15,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:15,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:15,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:15,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:15,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:15,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:15,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:15,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:15,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:15,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:15,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:15,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:15,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:15,966 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:15,966 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-19 07:58:16,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:16,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:16,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:16,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:16,297 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:16,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 07:58:19,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:20,148 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:20,149 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 07:58:20,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/data/55a236567/72b213e81e6e4756a289830f31ffccf4/FLAG3febc9529 [2023-11-19 07:58:20,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/data/55a236567/72b213e81e6e4756a289830f31ffccf4 [2023-11-19 07:58:20,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:20,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:20,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:20,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:20,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:20,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:20" (1/1) ... [2023-11-19 07:58:20,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283f46f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:20, skipping insertion in model container [2023-11-19 07:58:20,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:20" (1/1) ... [2023-11-19 07:58:20,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:22,839 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-19 07:58:22,876 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-19 07:58:22,899 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-19 07:58:22,900 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-19 07:58:22,953 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-19 07:58:23,088 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-19 07:58:23,197 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-19 07:58:23,201 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-19 07:58:23,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:23,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:23,409 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-19 07:58:23,425 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-19 07:58:23,437 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-19 07:58:23,440 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-19 07:58:23,473 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-19 07:58:23,511 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-19 07:58:23,572 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-19 07:58:23,573 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-19 07:58:23,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:23,998 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,998 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,999 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,999 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,999 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,999 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:23,999 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,000 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,000 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,000 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,000 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,001 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,001 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:24,009 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:24,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24 WrapperNode [2023-11-19 07:58:24,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:24,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:24,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:24,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:24,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,300 INFO L138 Inliner]: procedures = 743, calls = 1277, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4535 [2023-11-19 07:58:24,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:24,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:24,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:24,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:24,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:24,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:24,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:24,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:24,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (1/1) ... [2023-11-19 07:58:24,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:24,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:24,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 07:58:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 07:58:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-19 07:58:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-19 07:58:24,731 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-19 07:58:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 07:58:24,732 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 07:58:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 07:58:24,732 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 07:58:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-19 07:58:24,732 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-19 07:58:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-19 07:58:24,733 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 07:58:24,733 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 07:58:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 07:58:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-19 07:58:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-19 07:58:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-19 07:58:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-19 07:58:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:58:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:58:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-19 07:58:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:58:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-19 07:58:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-19 07:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-19 07:58:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-19 07:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:58:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 07:58:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 07:58:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-19 07:58:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-19 07:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-19 07:58:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-19 07:58:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 07:58:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 07:58:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:58:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:58:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-19 07:58:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-19 07:58:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:58:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:58:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-19 07:58:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-19 07:58:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-19 07:58:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-19 07:58:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:58:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-19 07:58:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-19 07:58:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-19 07:58:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-19 07:58:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 07:58:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 07:58:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 07:58:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 07:58:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-19 07:58:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 07:58:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 07:58:25,375 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:25,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:29,845 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:29,864 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:29,864 INFO L302 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-19 07:58:29,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:29 BoogieIcfgContainer [2023-11-19 07:58:29,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:29,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:29,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:29,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:29,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:20" (1/3) ... [2023-11-19 07:58:29,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555c5b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:29, skipping insertion in model container [2023-11-19 07:58:29,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:24" (2/3) ... [2023-11-19 07:58:29,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555c5b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:29, skipping insertion in model container [2023-11-19 07:58:29,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:29" (3/3) ... [2023-11-19 07:58:29,884 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-19 07:58:29,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:29,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:58:29,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:29,996 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d00328, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:29,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:58:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 1271 states, 1135 states have (on average 1.6105726872246695) internal successors, (1828), 1144 states have internal predecessors, (1828), 98 states have call successors, (98), 32 states have call predecessors, (98), 32 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 07:58:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:58:30,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:30,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:30,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:30,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1781391209, now seen corresponding path program 1 times [2023-11-19 07:58:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:30,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123847928] [2023-11-19 07:58:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:58:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:58:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:30,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123847928] [2023-11-19 07:58:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123847928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227406713] [2023-11-19 07:58:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:30,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:30,939 INFO L87 Difference]: Start difference. First operand has 1271 states, 1135 states have (on average 1.6105726872246695) internal successors, (1828), 1144 states have internal predecessors, (1828), 98 states have call successors, (98), 32 states have call predecessors, (98), 32 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:58:33,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:58:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:35,327 INFO L93 Difference]: Finished difference Result 2787 states and 4570 transitions. [2023-11-19 07:58:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2023-11-19 07:58:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:35,367 INFO L225 Difference]: With dead ends: 2787 [2023-11-19 07:58:35,368 INFO L226 Difference]: Without dead ends: 1496 [2023-11-19 07:58:35,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:35,385 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 555 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:35,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 2874 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 07:58:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2023-11-19 07:58:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1214. [2023-11-19 07:58:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1092 states have (on average 1.5128205128205128) internal successors, (1652), 1098 states have internal predecessors, (1652), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1826 transitions. [2023-11-19 07:58:35,537 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1826 transitions. Word has length 58 [2023-11-19 07:58:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:35,538 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 1826 transitions. [2023-11-19 07:58:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:58:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1826 transitions. [2023-11-19 07:58:35,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 07:58:35,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:35,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:35,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:35,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:35,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1804954839, now seen corresponding path program 1 times [2023-11-19 07:58:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566579014] [2023-11-19 07:58:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:58:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:58:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:58:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:36,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:36,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566579014] [2023-11-19 07:58:36,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566579014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:36,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:36,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294250950] [2023-11-19 07:58:36,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:36,200 INFO L87 Difference]: Start difference. First operand 1214 states and 1826 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:38,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:58:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:40,425 INFO L93 Difference]: Finished difference Result 2708 states and 4107 transitions. [2023-11-19 07:58:40,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:40,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 73 [2023-11-19 07:58:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:40,439 INFO L225 Difference]: With dead ends: 2708 [2023-11-19 07:58:40,439 INFO L226 Difference]: Without dead ends: 1498 [2023-11-19 07:58:40,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:40,446 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 553 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:40,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 4494 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 07:58:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-11-19 07:58:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1215. [2023-11-19 07:58:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1093 states have (on average 1.5123513266239708) internal successors, (1653), 1099 states have internal predecessors, (1653), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1827 transitions. [2023-11-19 07:58:40,564 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1827 transitions. Word has length 73 [2023-11-19 07:58:40,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:40,564 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1827 transitions. [2023-11-19 07:58:40,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1827 transitions. [2023-11-19 07:58:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:58:40,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:40,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:40,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -186415179, now seen corresponding path program 1 times [2023-11-19 07:58:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:40,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943189986] [2023-11-19 07:58:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:58:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:58:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:58:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943189986] [2023-11-19 07:58:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943189986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125401402] [2023-11-19 07:58:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:41,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:41,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:41,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:58:41,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125401402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:41,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:41,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 07:58:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912019929] [2023-11-19 07:58:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:41,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:41,966 INFO L87 Difference]: Start difference. First operand 1215 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:42,059 INFO L93 Difference]: Finished difference Result 2243 states and 3371 transitions. [2023-11-19 07:58:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:42,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2023-11-19 07:58:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:42,071 INFO L225 Difference]: With dead ends: 2243 [2023-11-19 07:58:42,071 INFO L226 Difference]: Without dead ends: 1217 [2023-11-19 07:58:42,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:42,079 INFO L413 NwaCegarLoop]: 1825 mSDtfsCounter, 0 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:42,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3640 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-19 07:58:42,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-11-19 07:58:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1095 states have (on average 1.5114155251141552) internal successors, (1655), 1101 states have internal predecessors, (1655), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1829 transitions. [2023-11-19 07:58:42,149 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1829 transitions. Word has length 75 [2023-11-19 07:58:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:42,152 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1829 transitions. [2023-11-19 07:58:42,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1829 transitions. [2023-11-19 07:58:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:58:42,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:42,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:42,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash 834653175, now seen corresponding path program 1 times [2023-11-19 07:58:42,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:42,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164745046] [2023-11-19 07:58:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:58:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:58:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:58:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164745046] [2023-11-19 07:58:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164745046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966086820] [2023-11-19 07:58:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:42,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:42,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:43,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:43,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:43,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:43,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966086820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:43,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:58:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970094256] [2023-11-19 07:58:43,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:43,872 INFO L87 Difference]: Start difference. First operand 1217 states and 1829 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:58:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:48,519 INFO L93 Difference]: Finished difference Result 2717 states and 4118 transitions. [2023-11-19 07:58:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2023-11-19 07:58:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:48,533 INFO L225 Difference]: With dead ends: 2717 [2023-11-19 07:58:48,534 INFO L226 Difference]: Without dead ends: 1505 [2023-11-19 07:58:48,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:48,541 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 554 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 6171 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 6171 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 07:58:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-19 07:58:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1223. [2023-11-19 07:58:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1101 states have (on average 1.508628519527702) internal successors, (1661), 1107 states have internal predecessors, (1661), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1835 transitions. [2023-11-19 07:58:48,605 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1835 transitions. Word has length 75 [2023-11-19 07:58:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1835 transitions. [2023-11-19 07:58:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:58:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1835 transitions. [2023-11-19 07:58:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:58:48,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:48,607 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:48,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:48,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:58:48,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:48,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1700142993, now seen corresponding path program 2 times [2023-11-19 07:58:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745657803] [2023-11-19 07:58:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:58:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:58:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:58:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 07:58:49,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:49,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745657803] [2023-11-19 07:58:49,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745657803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:49,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:49,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:49,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851306516] [2023-11-19 07:58:49,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:49,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:49,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:49,533 INFO L87 Difference]: Start difference. First operand 1223 states and 1835 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:53,540 INFO L93 Difference]: Finished difference Result 2663 states and 4037 transitions. [2023-11-19 07:58:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2023-11-19 07:58:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:53,553 INFO L225 Difference]: With dead ends: 2663 [2023-11-19 07:58:53,553 INFO L226 Difference]: Without dead ends: 1505 [2023-11-19 07:58:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:53,560 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 2624 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 4351 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 4351 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 07:58:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-19 07:58:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1223. [2023-11-19 07:58:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1101 states have (on average 1.5077202543142598) internal successors, (1660), 1107 states have internal predecessors, (1660), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1834 transitions. [2023-11-19 07:58:53,622 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1834 transitions. Word has length 81 [2023-11-19 07:58:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:53,623 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1834 transitions. [2023-11-19 07:58:53,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1834 transitions. [2023-11-19 07:58:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:58:53,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:53,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:53,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:53,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:53,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1976141641, now seen corresponding path program 1 times [2023-11-19 07:58:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309279701] [2023-11-19 07:58:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:58:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:58:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:58:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:58:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 07:58:54,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309279701] [2023-11-19 07:58:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309279701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707260293] [2023-11-19 07:58:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:54,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:54,300 INFO L87 Difference]: Start difference. First operand 1223 states and 1834 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:58:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:58,914 INFO L93 Difference]: Finished difference Result 2682 states and 4064 transitions. [2023-11-19 07:58:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2023-11-19 07:58:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:58,928 INFO L225 Difference]: With dead ends: 2682 [2023-11-19 07:58:58,928 INFO L226 Difference]: Without dead ends: 1572 [2023-11-19 07:58:58,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:58:58,934 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 3008 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:58,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 4632 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 07:58:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2023-11-19 07:58:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1227. [2023-11-19 07:58:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1104 states have (on average 1.506340579710145) internal successors, (1663), 1110 states have internal predecessors, (1663), 88 states have call successors, (88), 32 states have call predecessors, (88), 32 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:58:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1837 transitions. [2023-11-19 07:58:59,003 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1837 transitions. Word has length 90 [2023-11-19 07:58:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:59,004 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1837 transitions. [2023-11-19 07:58:59,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:58:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1837 transitions. [2023-11-19 07:58:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 07:58:59,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:59,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:59,010 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 07:58:59,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1980787470, now seen corresponding path program 1 times [2023-11-19 07:58:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295924745] [2023-11-19 07:58:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:58:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:58:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:58:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:58:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:58:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:58:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295924745] [2023-11-19 07:58:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295924745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603107434] [2023-11-19 07:58:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:59,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:59,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b712a8ca-14e9-4ec7-a78d-e904eb255a4f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:00,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:00,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:00,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603107434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:00,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-11-19 07:59:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866904746] [2023-11-19 07:59:00,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:00,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:59:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:59:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:00,876 INFO L87 Difference]: Start difference. First operand 1227 states and 1837 transitions. Second operand has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 13 states have internal predecessors, (116), 1 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 07:59:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []