./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:30:07,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:07,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:07,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:07,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:07,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:07,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:07,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:07,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:07,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:07,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:07,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:07,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:07,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:07,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:07,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:07,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:07,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:07,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:07,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:07,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:07,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:07,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:07,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:07,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:07,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:07,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:07,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:07,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:07,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:07,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:07,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:07,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:07,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:07,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:07,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:07,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:07,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:07,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:07,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:07,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:07,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 09:30:07,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:07,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:07,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:07,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:07,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:07,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:07,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:07,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:07,580 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:07,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:07,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:30:07,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:30:07,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:30:07,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:07,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:30:07,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:30:07,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:07,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:07,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:07,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:07,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:07,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:07,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:07,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:30:07,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:30:07,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 [2022-11-20 09:30:07,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:30:07,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:30:07,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:30:07,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:30:07,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:30:07,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-20 09:30:10,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:30:11,231 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:30:11,243 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-20 09:30:11,261 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/data/b2455b019/cb0be58e3d944f7ead77a50f9ab07c4a/FLAGeb5bb42a1 [2022-11-20 09:30:11,282 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/data/b2455b019/cb0be58e3d944f7ead77a50f9ab07c4a [2022-11-20 09:30:11,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:30:11,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:30:11,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:11,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:30:11,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:30:11,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:11,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b53c2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11, skipping insertion in model container [2022-11-20 09:30:11,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:11,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:30:11,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:11,813 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-20 09:30:11,822 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-20 09:30:11,826 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-20 09:30:11,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:11,846 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:30:11,925 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-20 09:30:11,931 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-20 09:30:11,938 WARN L237 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_d95c164f-5d38-417c-8149-27b4005e63d6/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-20 09:30:11,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:11,996 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:30:11,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11 WrapperNode [2022-11-20 09:30:11,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:11,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:11,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:30:11,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:30:12,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,049 INFO L138 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 141 [2022-11-20 09:30:12,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:12,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:30:12,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:30:12,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:30:12,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:30:12,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:30:12,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:30:12,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:30:12,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (1/1) ... [2022-11-20 09:30:12,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:12,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:30:12,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95c164f-5d38-417c-8149-27b4005e63d6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:30:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:30:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-20 09:30:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-20 09:30:12,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:30:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:30:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:30:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:30:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:30:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:30:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:30:12,177 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:30:12,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:30:12,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:30:12,830 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:30:13,013 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:30:13,013 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:30:13,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:13 BoogieIcfgContainer [2022-11-20 09:30:13,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:30:13,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:30:13,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:30:13,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:30:13,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:30:11" (1/3) ... [2022-11-20 09:30:13,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d28101a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:13, skipping insertion in model container [2022-11-20 09:30:13,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:11" (2/3) ... [2022-11-20 09:30:13,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d28101a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:13, skipping insertion in model container [2022-11-20 09:30:13,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:13" (3/3) ... [2022-11-20 09:30:13,033 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2022-11-20 09:30:13,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:30:13,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-20 09:30:13,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:30:13,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:30:13,279 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 09:30:13,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 151 transitions, 307 flow [2022-11-20 09:30:13,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 151 transitions, 307 flow [2022-11-20 09:30:13,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 151 transitions, 307 flow [2022-11-20 09:30:13,433 INFO L130 PetriNetUnfolder]: 14/167 cut-off events. [2022-11-20 09:30:13,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:30:13,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 14/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-20 09:30:13,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 4256 [2022-11-20 09:30:24,126 INFO L134 LiptonReduction]: Checked pairs total: 5715 [2022-11-20 09:30:24,126 INFO L136 LiptonReduction]: Total number of compositions: 180 [2022-11-20 09:30:24,135 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 41 transitions, 87 flow [2022-11-20 09:30:24,162 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 221 states, 119 states have (on average 3.7563025210084033) internal successors, (447), 220 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:30:24,188 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75ae485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:30:24,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-20 09:30:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 119 states have (on average 3.7563025210084033) internal successors, (447), 220 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:30:24,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:24,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:30:24,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash 25676, now seen corresponding path program 1 times [2022-11-20 09:30:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:24,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532903706] [2022-11-20 09:30:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:24,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532903706] [2022-11-20 09:30:24,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532903706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:24,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:24,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735603139] [2022-11-20 09:30:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:24,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:30:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:30:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:30:24,408 INFO L87 Difference]: Start difference. First operand has 221 states, 119 states have (on average 3.7563025210084033) internal successors, (447), 220 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:24,497 INFO L93 Difference]: Finished difference Result 143 states and 276 transitions. [2022-11-20 09:30:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:30:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:30:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:24,509 INFO L225 Difference]: With dead ends: 143 [2022-11-20 09:30:24,510 INFO L226 Difference]: Without dead ends: 143 [2022-11-20 09:30:24,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:30:24,514 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:24,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-20 09:30:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-20 09:30:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 2.967741935483871) internal successors, (276), 142 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 276 transitions. [2022-11-20 09:30:24,562 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 276 transitions. Word has length 2 [2022-11-20 09:30:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:24,563 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 276 transitions. [2022-11-20 09:30:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 276 transitions. [2022-11-20 09:30:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:30:24,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:24,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:30:24,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:30:24,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash 25665, now seen corresponding path program 1 times [2022-11-20 09:30:24,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:24,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519588033] [2022-11-20 09:30:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:24,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519588033] [2022-11-20 09:30:24,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519588033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:24,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:24,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756532337] [2022-11-20 09:30:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:24,733 INFO L87 Difference]: Start difference. First operand 143 states and 276 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:24,805 INFO L93 Difference]: Finished difference Result 119 states and 226 transitions. [2022-11-20 09:30:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:30:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:24,811 INFO L225 Difference]: With dead ends: 119 [2022-11-20 09:30:24,812 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 09:30:24,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:24,813 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:24,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 09:30:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-20 09:30:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 2.627906976744186) internal successors, (226), 118 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 226 transitions. [2022-11-20 09:30:24,834 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 226 transitions. Word has length 2 [2022-11-20 09:30:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:24,836 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 226 transitions. [2022-11-20 09:30:24,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 226 transitions. [2022-11-20 09:30:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:30:24,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:24,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:30:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:30:24,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 25667, now seen corresponding path program 1 times [2022-11-20 09:30:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:24,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948674042] [2022-11-20 09:30:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:24,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948674042] [2022-11-20 09:30:24,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948674042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:24,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:24,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971754180] [2022-11-20 09:30:24,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:24,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:24,939 INFO L87 Difference]: Start difference. First operand 119 states and 226 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:25,006 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2022-11-20 09:30:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:30:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:25,008 INFO L225 Difference]: With dead ends: 106 [2022-11-20 09:30:25,009 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 09:30:25,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,010 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:25,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 09:30:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2022-11-20 09:30:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 82 states have (on average 2.231707317073171) internal successors, (183), 99 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 183 transitions. [2022-11-20 09:30:25,019 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 183 transitions. Word has length 2 [2022-11-20 09:30:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,020 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 183 transitions. [2022-11-20 09:30:25,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 183 transitions. [2022-11-20 09:30:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:30:25,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:30:25,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:30:25,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash 24684626, now seen corresponding path program 1 times [2022-11-20 09:30:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424780145] [2022-11-20 09:30:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:25,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:25,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424780145] [2022-11-20 09:30:25,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424780145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:25,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:25,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227007055] [2022-11-20 09:30:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,130 INFO L87 Difference]: Start difference. First operand 100 states and 183 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:25,191 INFO L93 Difference]: Finished difference Result 84 states and 155 transitions. [2022-11-20 09:30:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 09:30:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:25,194 INFO L225 Difference]: With dead ends: 84 [2022-11-20 09:30:25,194 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 09:30:25,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,199 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:25,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 09:30:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-20 09:30:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 70 states have (on average 2.2142857142857144) internal successors, (155), 83 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 155 transitions. [2022-11-20 09:30:25,213 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 155 transitions. Word has length 4 [2022-11-20 09:30:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,214 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 155 transitions. [2022-11-20 09:30:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 155 transitions. [2022-11-20 09:30:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:30:25,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:30:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:30:25,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash 24684628, now seen corresponding path program 1 times [2022-11-20 09:30:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957017544] [2022-11-20 09:30:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:25,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957017544] [2022-11-20 09:30:25,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957017544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:25,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:25,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:25,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453752131] [2022-11-20 09:30:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:25,313 INFO L87 Difference]: Start difference. First operand 84 states and 155 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:25,414 INFO L93 Difference]: Finished difference Result 70 states and 128 transitions. [2022-11-20 09:30:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 09:30:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:25,425 INFO L225 Difference]: With dead ends: 70 [2022-11-20 09:30:25,426 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 09:30:25,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:25,427 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:25,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 09:30:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-11-20 09:30:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 2.189655172413793) internal successors, (127), 67 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 127 transitions. [2022-11-20 09:30:25,440 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 127 transitions. Word has length 4 [2022-11-20 09:30:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,440 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 127 transitions. [2022-11-20 09:30:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 127 transitions. [2022-11-20 09:30:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:30:25,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 09:30:25,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:30:25,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 765225265, now seen corresponding path program 1 times [2022-11-20 09:30:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71361649] [2022-11-20 09:30:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71361649] [2022-11-20 09:30:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71361649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:25,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:25,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192524050] [2022-11-20 09:30:25,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:25,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:25,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:25,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,578 INFO L87 Difference]: Start difference. First operand 68 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:25,635 INFO L93 Difference]: Finished difference Result 68 states and 126 transitions. [2022-11-20 09:30:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 09:30:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:25,637 INFO L225 Difference]: With dead ends: 68 [2022-11-20 09:30:25,637 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 09:30:25,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,638 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:25,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 09:30:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-20 09:30:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 2.1724137931034484) internal successors, (126), 67 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 126 transitions. [2022-11-20 09:30:25,643 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 126 transitions. Word has length 5 [2022-11-20 09:30:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,644 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 126 transitions. [2022-11-20 09:30:25,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 126 transitions. [2022-11-20 09:30:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:30:25,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:30:25,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:30:25,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2047831774, now seen corresponding path program 1 times [2022-11-20 09:30:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203860365] [2022-11-20 09:30:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203860365] [2022-11-20 09:30:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203860365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:25,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:25,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912301844] [2022-11-20 09:30:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:25,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,699 INFO L87 Difference]: Start difference. First operand 68 states and 126 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:25,714 INFO L93 Difference]: Finished difference Result 15 states and 23 transitions. [2022-11-20 09:30:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 09:30:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:25,715 INFO L225 Difference]: With dead ends: 15 [2022-11-20 09:30:25,715 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 09:30:25,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:25,716 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 09:30:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 09:30:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-11-20 09:30:25,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 6 [2022-11-20 09:30:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:25,719 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-11-20 09:30:25,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-11-20 09:30:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:30:25,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:25,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-20 09:30:25,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:30:25,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 09:30:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2047934344, now seen corresponding path program 1 times [2022-11-20 09:30:25,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:25,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999247355] [2022-11-20 09:30:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:25,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:25,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:30:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:25,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:30:25,764 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:30:25,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-11-20 09:30:25,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 42 remaining) [2022-11-20 09:30:25,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 42 remaining) [2022-11-20 09:30:25,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 42 remaining) [2022-11-20 09:30:25,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 42 remaining) [2022-11-20 09:30:25,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (36 of 42 remaining) [2022-11-20 09:30:25,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 42 remaining) [2022-11-20 09:30:25,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 42 remaining) [2022-11-20 09:30:25,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (33 of 42 remaining) [2022-11-20 09:30:25,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (32 of 42 remaining) [2022-11-20 09:30:25,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 42 remaining) [2022-11-20 09:30:25,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 42 remaining) [2022-11-20 09:30:25,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 42 remaining) [2022-11-20 09:30:25,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 42 remaining) [2022-11-20 09:30:25,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 42 remaining) [2022-11-20 09:30:25,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 42 remaining) [2022-11-20 09:30:25,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 42 remaining) [2022-11-20 09:30:25,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 42 remaining) [2022-11-20 09:30:25,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 42 remaining) [2022-11-20 09:30:25,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 42 remaining) [2022-11-20 09:30:25,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (21 of 42 remaining) [2022-11-20 09:30:25,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 42 remaining) [2022-11-20 09:30:25,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 42 remaining) [2022-11-20 09:30:25,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 42 remaining) [2022-11-20 09:30:25,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 42 remaining) [2022-11-20 09:30:25,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 42 remaining) [2022-11-20 09:30:25,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 42 remaining) [2022-11-20 09:30:25,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (14 of 42 remaining) [2022-11-20 09:30:25,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 42 remaining) [2022-11-20 09:30:25,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 42 remaining) [2022-11-20 09:30:25,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 42 remaining) [2022-11-20 09:30:25,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (10 of 42 remaining) [2022-11-20 09:30:25,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 42 remaining) [2022-11-20 09:30:25,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 42 remaining) [2022-11-20 09:30:25,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 42 remaining) [2022-11-20 09:30:25,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 42 remaining) [2022-11-20 09:30:25,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 42 remaining) [2022-11-20 09:30:25,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 42 remaining) [2022-11-20 09:30:25,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 42 remaining) [2022-11-20 09:30:25,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 42 remaining) [2022-11-20 09:30:25,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 42 remaining) [2022-11-20 09:30:25,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 42 remaining) [2022-11-20 09:30:25,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:30:25,781 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:25,783 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 09:30:25,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 09:30:25,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:30:25,840 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 09:30:25,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 264 transitions, 540 flow [2022-11-20 09:30:25,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 264 transitions, 540 flow [2022-11-20 09:30:25,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 264 transitions, 540 flow [2022-11-20 09:30:25,913 INFO L130 PetriNetUnfolder]: 27/298 cut-off events. [2022-11-20 09:30:25,914 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:30:25,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 298 events. 27/298 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 976 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 242. Up to 6 conditions per place. [2022-11-20 09:30:25,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 33824 [2022-11-20 09:30:42,575 INFO L134 LiptonReduction]: Checked pairs total: 48419 [2022-11-20 09:30:42,576 INFO L136 LiptonReduction]: Total number of compositions: 293 [2022-11-20 09:30:42,579 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 86 transitions, 184 flow [2022-11-20 09:30:43,002 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9772 states, 7691 states have (on average 4.023403978676375) internal successors, (30944), 9771 states have internal predecessors, (30944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:43,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:30:43,005 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75ae485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:30:43,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-20 09:30:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 9772 states, 7691 states have (on average 4.023403978676375) internal successors, (30944), 9771 states have internal predecessors, (30944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:30:43,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:43,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:30:43,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash 46791, now seen corresponding path program 1 times [2022-11-20 09:30:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607333904] [2022-11-20 09:30:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:43,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607333904] [2022-11-20 09:30:43,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607333904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:43,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261285766] [2022-11-20 09:30:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:43,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:43,136 INFO L87 Difference]: Start difference. First operand has 9772 states, 7691 states have (on average 4.023403978676375) internal successors, (30944), 9771 states have internal predecessors, (30944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:43,382 INFO L93 Difference]: Finished difference Result 5739 states and 17237 transitions. [2022-11-20 09:30:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:43,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:30:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:43,435 INFO L225 Difference]: With dead ends: 5739 [2022-11-20 09:30:43,436 INFO L226 Difference]: Without dead ends: 5739 [2022-11-20 09:30:43,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:43,437 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:43,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 5 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2022-11-20 09:30:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 5739. [2022-11-20 09:30:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5739 states, 5072 states have (on average 3.3984621451104102) internal successors, (17237), 5738 states have internal predecessors, (17237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 17237 transitions. [2022-11-20 09:30:43,710 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 17237 transitions. Word has length 2 [2022-11-20 09:30:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:43,710 INFO L495 AbstractCegarLoop]: Abstraction has 5739 states and 17237 transitions. [2022-11-20 09:30:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 17237 transitions. [2022-11-20 09:30:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:30:43,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:43,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:30:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:30:43,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash 46792, now seen corresponding path program 1 times [2022-11-20 09:30:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:43,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976161468] [2022-11-20 09:30:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:43,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976161468] [2022-11-20 09:30:43,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976161468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:43,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:43,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864974101] [2022-11-20 09:30:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:43,761 INFO L87 Difference]: Start difference. First operand 5739 states and 17237 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:44,182 INFO L93 Difference]: Finished difference Result 5644 states and 16371 transitions. [2022-11-20 09:30:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:44,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:30:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:44,222 INFO L225 Difference]: With dead ends: 5644 [2022-11-20 09:30:44,223 INFO L226 Difference]: Without dead ends: 5644 [2022-11-20 09:30:44,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:44,224 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 69 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:44,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 10 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:30:44,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2022-11-20 09:30:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5296. [2022-11-20 09:30:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 4902 states have (on average 3.1772745818033457) internal successors, (15575), 5295 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 15575 transitions. [2022-11-20 09:30:44,424 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 15575 transitions. Word has length 2 [2022-11-20 09:30:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:44,424 INFO L495 AbstractCegarLoop]: Abstraction has 5296 states and 15575 transitions. [2022-11-20 09:30:44,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 15575 transitions. [2022-11-20 09:30:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:30:44,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:44,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 09:30:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:30:44,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1395171651, now seen corresponding path program 1 times [2022-11-20 09:30:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:44,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507707888] [2022-11-20 09:30:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507707888] [2022-11-20 09:30:44,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507707888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:44,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:44,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814907377] [2022-11-20 09:30:44,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:44,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:44,524 INFO L87 Difference]: Start difference. First operand 5296 states and 15575 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:44,817 INFO L93 Difference]: Finished difference Result 4417 states and 12815 transitions. [2022-11-20 09:30:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 09:30:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:44,852 INFO L225 Difference]: With dead ends: 4417 [2022-11-20 09:30:44,852 INFO L226 Difference]: Without dead ends: 4417 [2022-11-20 09:30:44,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:44,853 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:44,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 15 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:30:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2022-11-20 09:30:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4321. [2022-11-20 09:30:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4039 states have (on average 3.153998514483783) internal successors, (12739), 4320 states have internal predecessors, (12739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 12739 transitions. [2022-11-20 09:30:45,093 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 12739 transitions. Word has length 5 [2022-11-20 09:30:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:45,093 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 12739 transitions. [2022-11-20 09:30:45,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 12739 transitions. [2022-11-20 09:30:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:30:45,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:45,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 09:30:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:30:45,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1395171652, now seen corresponding path program 1 times [2022-11-20 09:30:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093969920] [2022-11-20 09:30:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:45,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093969920] [2022-11-20 09:30:45,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093969920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:45,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:45,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:45,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113049255] [2022-11-20 09:30:45,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:45,235 INFO L87 Difference]: Start difference. First operand 4321 states and 12739 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:45,404 INFO L93 Difference]: Finished difference Result 3253 states and 9631 transitions. [2022-11-20 09:30:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 09:30:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:45,428 INFO L225 Difference]: With dead ends: 3253 [2022-11-20 09:30:45,429 INFO L226 Difference]: Without dead ends: 3253 [2022-11-20 09:30:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:45,430 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:45,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-11-20 09:30:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3253. [2022-11-20 09:30:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3083 states have (on average 3.12390528705806) internal successors, (9631), 3252 states have internal predecessors, (9631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 9631 transitions. [2022-11-20 09:30:45,538 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 9631 transitions. Word has length 5 [2022-11-20 09:30:45,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:45,538 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 9631 transitions. [2022-11-20 09:30:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 9631 transitions. [2022-11-20 09:30:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:30:45,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:45,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:30:45,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1161288603, now seen corresponding path program 1 times [2022-11-20 09:30:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:45,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156251325] [2022-11-20 09:30:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:45,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156251325] [2022-11-20 09:30:45,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156251325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:45,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:45,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:45,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175138744] [2022-11-20 09:30:45,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:45,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:45,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:45,597 INFO L87 Difference]: Start difference. First operand 3253 states and 9631 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:45,816 INFO L93 Difference]: Finished difference Result 3625 states and 10681 transitions. [2022-11-20 09:30:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 09:30:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:45,837 INFO L225 Difference]: With dead ends: 3625 [2022-11-20 09:30:45,837 INFO L226 Difference]: Without dead ends: 3625 [2022-11-20 09:30:45,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:45,839 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:45,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 19 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:30:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2022-11-20 09:30:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3607. [2022-11-20 09:30:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3437 states have (on average 3.09979633401222) internal successors, (10654), 3606 states have internal predecessors, (10654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 10654 transitions. [2022-11-20 09:30:46,035 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 10654 transitions. Word has length 8 [2022-11-20 09:30:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:46,035 INFO L495 AbstractCegarLoop]: Abstraction has 3607 states and 10654 transitions. [2022-11-20 09:30:46,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 10654 transitions. [2022-11-20 09:30:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:30:46,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:46,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:30:46,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -185560979, now seen corresponding path program 1 times [2022-11-20 09:30:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844334235] [2022-11-20 09:30:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:46,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844334235] [2022-11-20 09:30:46,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844334235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:46,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642581861] [2022-11-20 09:30:46,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:46,069 INFO L87 Difference]: Start difference. First operand 3607 states and 10654 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:46,221 INFO L93 Difference]: Finished difference Result 1072 states and 3048 transitions. [2022-11-20 09:30:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:46,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 09:30:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:46,227 INFO L225 Difference]: With dead ends: 1072 [2022-11-20 09:30:46,227 INFO L226 Difference]: Without dead ends: 1072 [2022-11-20 09:30:46,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:46,228 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:46,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-11-20 09:30:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 996. [2022-11-20 09:30:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 964 states have (on average 2.9481327800829877) internal successors, (2842), 995 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2842 transitions. [2022-11-20 09:30:46,260 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2842 transitions. Word has length 9 [2022-11-20 09:30:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:46,260 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 2842 transitions. [2022-11-20 09:30:46,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2842 transitions. [2022-11-20 09:30:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:30:46,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:46,262 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:46,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:30:46,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 380052042, now seen corresponding path program 1 times [2022-11-20 09:30:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:46,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192789709] [2022-11-20 09:30:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192789709] [2022-11-20 09:30:46,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192789709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:46,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:46,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:46,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010977799] [2022-11-20 09:30:46,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:30:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:30:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:46,460 INFO L87 Difference]: Start difference. First operand 996 states and 2842 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:46,620 INFO L93 Difference]: Finished difference Result 1046 states and 2990 transitions. [2022-11-20 09:30:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:30:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:30:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:46,625 INFO L225 Difference]: With dead ends: 1046 [2022-11-20 09:30:46,625 INFO L226 Difference]: Without dead ends: 1046 [2022-11-20 09:30:46,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:46,626 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 104 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:46,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 17 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-20 09:30:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 904. [2022-11-20 09:30:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 872 states have (on average 2.944954128440367) internal successors, (2568), 903 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2568 transitions. [2022-11-20 09:30:46,661 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2568 transitions. Word has length 11 [2022-11-20 09:30:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:46,662 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2568 transitions. [2022-11-20 09:30:46,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2568 transitions. [2022-11-20 09:30:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:30:46,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:46,666 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 09:30:46,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:30:46,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-20 09:30:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 222112165, now seen corresponding path program 1 times [2022-11-20 09:30:46,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:46,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637051471] [2022-11-20 09:30:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:46,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:30:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:46,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:30:46,704 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:30:46,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2022-11-20 09:30:46,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (55 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2022-11-20 09:30:46,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (52 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (51 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2022-11-20 09:30:46,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2022-11-20 09:30:46,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2022-11-20 09:30:46,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (40 of 61 remaining) [2022-11-20 09:30:46,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2022-11-20 09:30:46,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2022-11-20 09:30:46,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 61 remaining) [2022-11-20 09:30:46,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (33 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 61 remaining) [2022-11-20 09:30:46,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (30 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (29 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2022-11-20 09:30:46,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2022-11-20 09:30:46,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2022-11-20 09:30:46,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2022-11-20 09:30:46,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2022-11-20 09:30:46,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2022-11-20 09:30:46,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2022-11-20 09:30:46,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2022-11-20 09:30:46,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2022-11-20 09:30:46,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2022-11-20 09:30:46,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (14 of 61 remaining) [2022-11-20 09:30:46,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2022-11-20 09:30:46,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2022-11-20 09:30:46,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 61 remaining) [2022-11-20 09:30:46,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (10 of 61 remaining) [2022-11-20 09:30:46,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2022-11-20 09:30:46,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 61 remaining) [2022-11-20 09:30:46,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 61 remaining) [2022-11-20 09:30:46,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 61 remaining) [2022-11-20 09:30:46,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 61 remaining) [2022-11-20 09:30:46,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 61 remaining) [2022-11-20 09:30:46,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 61 remaining) [2022-11-20 09:30:46,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 61 remaining) [2022-11-20 09:30:46,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 61 remaining) [2022-11-20 09:30:46,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 61 remaining) [2022-11-20 09:30:46,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:30:46,718 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:46,719 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 09:30:46,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 09:30:46,803 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:30:46,808 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 09:30:46,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 377 transitions, 775 flow [2022-11-20 09:30:46,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 377 transitions, 775 flow [2022-11-20 09:30:46,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 377 transitions, 775 flow [2022-11-20 09:30:46,944 INFO L130 PetriNetUnfolder]: 40/429 cut-off events. [2022-11-20 09:30:46,944 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 09:30:46,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 429 events. 40/429 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1739 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 354. Up to 8 conditions per place. [2022-11-20 09:30:46,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2022-11-20 09:31:09,079 INFO L134 LiptonReduction]: Checked pairs total: 139153 [2022-11-20 09:31:09,079 INFO L136 LiptonReduction]: Total number of compositions: 419 [2022-11-20 09:31:09,080 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 117 places, 128 transitions, 277 flow [2022-11-20 09:31:21,482 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 352583 states, 310903 states have (on average 4.883700060790664) internal successors, (1518357), 352582 states have internal predecessors, (1518357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:21,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:31:21,515 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75ae485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:31:21,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-20 09:31:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 352583 states, 310903 states have (on average 4.883700060790664) internal successors, (1518357), 352582 states have internal predecessors, (1518357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:31:22,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:22,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:31:22,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 09:31:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 75221, now seen corresponding path program 1 times [2022-11-20 09:31:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584053312] [2022-11-20 09:31:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:22,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:22,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584053312] [2022-11-20 09:31:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584053312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:22,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:22,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:31:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320165723] [2022-11-20 09:31:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:22,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:31:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:31:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:31:22,527 INFO L87 Difference]: Start difference. First operand has 352583 states, 310903 states have (on average 4.883700060790664) internal successors, (1518357), 352582 states have internal predecessors, (1518357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:28,361 INFO L93 Difference]: Finished difference Result 228357 states and 939653 transitions. [2022-11-20 09:31:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:31:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:31:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:31,864 INFO L225 Difference]: With dead ends: 228357 [2022-11-20 09:31:31,864 INFO L226 Difference]: Without dead ends: 228357 [2022-11-20 09:31:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:31:31,865 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:31,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228357 states. [2022-11-20 09:31:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228357 to 228357. [2022-11-20 09:31:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228357 states, 210175 states have (on average 4.470812418222909) internal successors, (939653), 228356 states have internal predecessors, (939653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228357 states to 228357 states and 939653 transitions. [2022-11-20 09:31:45,390 INFO L78 Accepts]: Start accepts. Automaton has 228357 states and 939653 transitions. Word has length 2 [2022-11-20 09:31:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:45,390 INFO L495 AbstractCegarLoop]: Abstraction has 228357 states and 939653 transitions. [2022-11-20 09:31:45,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 228357 states and 939653 transitions. [2022-11-20 09:31:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:31:45,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:45,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:31:45,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:31:45,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 09:31:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash 75207, now seen corresponding path program 1 times [2022-11-20 09:31:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:45,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808154710] [2022-11-20 09:31:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:45,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:45,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:45,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808154710] [2022-11-20 09:31:45,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808154710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:45,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:45,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:31:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795072181] [2022-11-20 09:31:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:45,435 INFO L87 Difference]: Start difference. First operand 228357 states and 939653 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:48,478 INFO L93 Difference]: Finished difference Result 195588 states and 800420 transitions. [2022-11-20 09:31:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 09:31:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:51,103 INFO L225 Difference]: With dead ends: 195588 [2022-11-20 09:31:51,103 INFO L226 Difference]: Without dead ends: 195588 [2022-11-20 09:31:51,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:51,104 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:51,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 9 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195588 states.