./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8 --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 dadbc714432dbabd9f10b5aceb2a2ff8af11608da70d21414f772d02695c7806 --- 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-e04fb08 [2022-11-16 12:53:09,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:53:09,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:53:09,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:53:09,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:53:09,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:53:09,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:53:09,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:53:09,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:53:09,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:53:09,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:53:09,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:53:09,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:53:09,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:53:09,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:53:09,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:53:09,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:53:09,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:53:09,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:53:09,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:53:09,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:53:09,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:53:09,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:53:09,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:53:09,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:53:09,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:53:09,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:53:09,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:53:09,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:53:09,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:53:09,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:53:09,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:53:09,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:53:09,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:53:09,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:53:09,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:53:09,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:53:09,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:53:09,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:53:09,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:53:09,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:53:09,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:53:09,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:53:09,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:53:09,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:53:09,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:53:09,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:53:09,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:53:09,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:53:09,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:53:09,605 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:53:09,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:53:09,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:53:09,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:53:09,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:53:09,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:53:09,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:53:09,608 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:53:09,608 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:53:09,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:53:09,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:53:09,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:53:09,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:53:09,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:53:09,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:53:09,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:53:09,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:53:09,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:53:09,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:53:09,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:53:09,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:53:09,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:53:09,612 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_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dadbc714432dbabd9f10b5aceb2a2ff8af11608da70d21414f772d02695c7806 [2022-11-16 12:53:09,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:53:09,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:53:09,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:53:09,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:53:09,947 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:53:09,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2022-11-16 12:53:10,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/data/571531aae/62ccd2e8e82c428e88d5157625daf2da/FLAGc14c657fd [2022-11-16 12:53:10,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:53:10,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2022-11-16 12:53:10,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/data/571531aae/62ccd2e8e82c428e88d5157625daf2da/FLAGc14c657fd [2022-11-16 12:53:10,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/data/571531aae/62ccd2e8e82c428e88d5157625daf2da [2022-11-16 12:53:10,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:53:10,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:53:10,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:53:10,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:53:10,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:53:10,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:53:10" (1/1) ... [2022-11-16 12:53:10,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a69913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:10, skipping insertion in model container [2022-11-16 12:53:10,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:53:10" (1/1) ... [2022-11-16 12:53:10,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:53:10,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:53:11,304 WARN L229 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_50025b8e-df4d-4d75-992c-63ad328cae5f/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31039,31052] [2022-11-16 12:53:11,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:53:11,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:53:11,403 WARN L229 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_50025b8e-df4d-4d75-992c-63ad328cae5f/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31039,31052] [2022-11-16 12:53:11,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:53:11,449 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:53:11,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11 WrapperNode [2022-11-16 12:53:11,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:53:11,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:53:11,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:53:11,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:53:11,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,531 INFO L138 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 174 [2022-11-16 12:53:11,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:53:11,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:53:11,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:53:11,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:53:11,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:53:11,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:53:11,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:53:11,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:53:11,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:53:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:11,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:53:11,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50025b8e-df4d-4d75-992c-63ad328cae5f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:53:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:53:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 12:53:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 12:53:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:53:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:53:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:53:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:53:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:53:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:53:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:53:11,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:53:11,877 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:53:11,879 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:53:12,418 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:53:12,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:53:12,717 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:53:12,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:53:12 BoogieIcfgContainer [2022-11-16 12:53:12,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:53:12,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:53:12,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:53:12,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:53:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:53:10" (1/3) ... [2022-11-16 12:53:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:53:12, skipping insertion in model container [2022-11-16 12:53:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (2/3) ... [2022-11-16 12:53:12,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:53:12, skipping insertion in model container [2022-11-16 12:53:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:53:12" (3/3) ... [2022-11-16 12:53:12,729 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2.i [2022-11-16 12:53:12,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:53:12,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-16 12:53:12,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:53:12,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:53:12,908 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:53:12,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 144 transitions, 293 flow [2022-11-16 12:53:12,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 144 transitions, 293 flow [2022-11-16 12:53:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 144 transitions, 293 flow [2022-11-16 12:53:13,043 INFO L130 PetriNetUnfolder]: 8/160 cut-off events. [2022-11-16 12:53:13,044 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:53:13,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 160 events. 8/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2022-11-16 12:53:13,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 3800 [2022-11-16 12:53:23,264 INFO L134 LiptonReduction]: Checked pairs total: 4871 [2022-11-16 12:53:23,264 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-11-16 12:53:23,272 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 52 transitions, 109 flow [2022-11-16 12:53:23,303 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 325 states, 163 states have (on average 3.8466257668711656) internal successors, (627), 324 states have internal predecessors, (627), 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) [2022-11-16 12:53:23,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:53:23,326 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;@58b61864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:53:23,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2022-11-16 12:53:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 163 states have (on average 3.8466257668711656) internal successors, (627), 324 states have internal predecessors, (627), 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) [2022-11-16 12:53:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:53:23,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:23,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:53:23,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2022-11-16 12:53:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 31751, now seen corresponding path program 1 times [2022-11-16 12:53:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:23,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413935545] [2022-11-16 12:53:23,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:23,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:23,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413935545] [2022-11-16 12:53:23,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413935545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:23,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:23,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:53:23,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617109811] [2022-11-16 12:53:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:23,678 INFO L87 Difference]: Start difference. First operand has 325 states, 163 states have (on average 3.8466257668711656) internal successors, (627), 324 states have internal predecessors, (627), 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) [2022-11-16 12:53:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:23,770 INFO L93 Difference]: Finished difference Result 94 states and 176 transitions. [2022-11-16 12:53:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:23,773 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 [2022-11-16 12:53:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:23,785 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:53:23,786 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 12:53:23,787 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 [2022-11-16 12:53:23,792 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 12:53:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-16 12:53:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 2.410958904109589) internal successors, (176), 93 states have internal predecessors, (176), 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) [2022-11-16 12:53:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 176 transitions. [2022-11-16 12:53:23,850 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 176 transitions. Word has length 2 [2022-11-16 12:53:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:23,850 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 176 transitions. [2022-11-16 12:53:23,850 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) [2022-11-16 12:53:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 176 transitions. [2022-11-16 12:53:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:53:23,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:23,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:53:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:53:23,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2022-11-16 12:53:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash 31753, now seen corresponding path program 1 times [2022-11-16 12:53:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:23,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412549568] [2022-11-16 12:53:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:23,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412549568] [2022-11-16 12:53:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412549568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:23,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:53:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140358077] [2022-11-16 12:53:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:23,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:23,966 INFO L87 Difference]: Start difference. First operand 94 states and 176 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) [2022-11-16 12:53:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:24,014 INFO L93 Difference]: Finished difference Result 75 states and 137 transitions. [2022-11-16 12:53:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:24,019 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 [2022-11-16 12:53:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:24,027 INFO L225 Difference]: With dead ends: 75 [2022-11-16 12:53:24,027 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 12:53:24,028 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 [2022-11-16 12:53:24,030 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:24,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:53:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 12:53:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-16 12:53:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 74 states have internal predecessors, (137), 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) [2022-11-16 12:53:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 137 transitions. [2022-11-16 12:53:24,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 137 transitions. Word has length 2 [2022-11-16 12:53:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:24,050 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 137 transitions. [2022-11-16 12:53:24,050 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) [2022-11-16 12:53:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 137 transitions. [2022-11-16 12:53:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:53:24,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:24,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:53:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:53:24,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2022-11-16 12:53:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 30538433, now seen corresponding path program 1 times [2022-11-16 12:53:24,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185374491] [2022-11-16 12:53:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:24,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:24,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185374491] [2022-11-16 12:53:24,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185374491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:24,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:24,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554579292] [2022-11-16 12:53:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:24,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:24,300 INFO L87 Difference]: Start difference. First operand 75 states and 137 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) [2022-11-16 12:53:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:24,376 INFO L93 Difference]: Finished difference Result 71 states and 130 transitions. [2022-11-16 12:53:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:24,376 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 [2022-11-16 12:53:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:24,379 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:53:24,379 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 12:53:24,380 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 [2022-11-16 12:53:24,383 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:24,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:53:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 12:53:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-16 12:53:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 2.096774193548387) internal successors, (130), 70 states have internal predecessors, (130), 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) [2022-11-16 12:53:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions. [2022-11-16 12:53:24,399 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 4 [2022-11-16 12:53:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:24,400 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions. [2022-11-16 12:53:24,401 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) [2022-11-16 12:53:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2022-11-16 12:53:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:53:24,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:24,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:53:24,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:53:24,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2022-11-16 12:53:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 30538434, now seen corresponding path program 1 times [2022-11-16 12:53:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114090988] [2022-11-16 12:53:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:24,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114090988] [2022-11-16 12:53:24,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114090988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:24,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:24,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:24,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453344903] [2022-11-16 12:53:24,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:24,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:24,572 INFO L87 Difference]: Start difference. First operand 71 states and 130 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) [2022-11-16 12:53:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:24,611 INFO L93 Difference]: Finished difference Result 67 states and 123 transitions. [2022-11-16 12:53:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:24,611 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 [2022-11-16 12:53:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:24,612 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:53:24,612 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:53:24,613 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 [2022-11-16 12:53:24,614 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:24,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:53:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:53:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-16 12:53:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 66 states have internal predecessors, (123), 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) [2022-11-16 12:53:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 123 transitions. [2022-11-16 12:53:24,619 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 123 transitions. Word has length 4 [2022-11-16 12:53:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:24,620 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 123 transitions. [2022-11-16 12:53:24,620 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) [2022-11-16 12:53:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 123 transitions. [2022-11-16 12:53:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:53:24,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:24,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 12:53:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:53:24,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2022-11-16 12:53:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -717305188, now seen corresponding path program 1 times [2022-11-16 12:53:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:24,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322971956] [2022-11-16 12:53:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:24,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:53:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:24,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:53:24,657 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:53:24,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (65 of 66 remaining) [2022-11-16 12:53:24,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 66 remaining) [2022-11-16 12:53:24,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 66 remaining) [2022-11-16 12:53:24,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 66 remaining) [2022-11-16 12:53:24,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 66 remaining) [2022-11-16 12:53:24,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 66 remaining) [2022-11-16 12:53:24,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 66 remaining) [2022-11-16 12:53:24,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 66 remaining) [2022-11-16 12:53:24,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 66 remaining) [2022-11-16 12:53:24,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 66 remaining) [2022-11-16 12:53:24,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 66 remaining) [2022-11-16 12:53:24,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 66 remaining) [2022-11-16 12:53:24,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 66 remaining) [2022-11-16 12:53:24,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 66 remaining) [2022-11-16 12:53:24,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 66 remaining) [2022-11-16 12:53:24,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 66 remaining) [2022-11-16 12:53:24,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 66 remaining) [2022-11-16 12:53:24,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 66 remaining) [2022-11-16 12:53:24,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 66 remaining) [2022-11-16 12:53:24,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 66 remaining) [2022-11-16 12:53:24,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 66 remaining) [2022-11-16 12:53:24,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (44 of 66 remaining) [2022-11-16 12:53:24,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 66 remaining) [2022-11-16 12:53:24,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 66 remaining) [2022-11-16 12:53:24,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 66 remaining) [2022-11-16 12:53:24,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 66 remaining) [2022-11-16 12:53:24,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (39 of 66 remaining) [2022-11-16 12:53:24,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30ASSERT_VIOLATIONMEMORY_LEAK (38 of 66 remaining) [2022-11-16 12:53:24,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 66 remaining) [2022-11-16 12:53:24,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 66 remaining) [2022-11-16 12:53:24,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 66 remaining) [2022-11-16 12:53:24,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 66 remaining) [2022-11-16 12:53:24,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (33 of 66 remaining) [2022-11-16 12:53:24,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 66 remaining) [2022-11-16 12:53:24,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 66 remaining) [2022-11-16 12:53:24,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 66 remaining) [2022-11-16 12:53:24,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 66 remaining) [2022-11-16 12:53:24,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 66 remaining) [2022-11-16 12:53:24,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 66 remaining) [2022-11-16 12:53:24,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 66 remaining) [2022-11-16 12:53:24,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 66 remaining) [2022-11-16 12:53:24,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 66 remaining) [2022-11-16 12:53:24,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 66 remaining) [2022-11-16 12:53:24,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 66 remaining) [2022-11-16 12:53:24,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 66 remaining) [2022-11-16 12:53:24,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 66 remaining) [2022-11-16 12:53:24,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 66 remaining) [2022-11-16 12:53:24,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 66 remaining) [2022-11-16 12:53:24,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 66 remaining) [2022-11-16 12:53:24,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 66 remaining) [2022-11-16 12:53:24,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 66 remaining) [2022-11-16 12:53:24,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 66 remaining) [2022-11-16 12:53:24,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 66 remaining) [2022-11-16 12:53:24,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 66 remaining) [2022-11-16 12:53:24,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 66 remaining) [2022-11-16 12:53:24,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (10 of 66 remaining) [2022-11-16 12:53:24,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 66 remaining) [2022-11-16 12:53:24,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 66 remaining) [2022-11-16 12:53:24,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 66 remaining) [2022-11-16 12:53:24,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 66 remaining) [2022-11-16 12:53:24,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (5 of 66 remaining) [2022-11-16 12:53:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30ASSERT_VIOLATIONMEMORY_LEAK (4 of 66 remaining) [2022-11-16 12:53:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 66 remaining) [2022-11-16 12:53:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 66 remaining) [2022-11-16 12:53:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 66 remaining) [2022-11-16 12:53:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 66 remaining) [2022-11-16 12:53:24,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:53:24,677 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:53:24,679 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:53:24,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:53:24,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:53:24,756 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:53:24,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 245 transitions, 502 flow [2022-11-16 12:53:24,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 245 transitions, 502 flow [2022-11-16 12:53:24,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 245 transitions, 502 flow [2022-11-16 12:53:24,841 INFO L130 PetriNetUnfolder]: 15/279 cut-off events. [2022-11-16 12:53:24,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:53:24,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 279 events. 15/279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 799 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 218. Up to 6 conditions per place. [2022-11-16 12:53:24,860 INFO L119 LiptonReduction]: Number of co-enabled transitions 27800 [2022-11-16 12:53:37,831 INFO L134 LiptonReduction]: Checked pairs total: 71269 [2022-11-16 12:53:37,831 INFO L136 LiptonReduction]: Total number of compositions: 304 [2022-11-16 12:53:37,832 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 120 transitions, 252 flow [2022-11-16 12:53:38,536 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 23354 states, 18105 states have (on average 3.9086440209886772) internal successors, (70766), 23353 states have internal predecessors, (70766), 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) [2022-11-16 12:53:38,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:53:38,543 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;@58b61864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:53:38,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 97 error locations. [2022-11-16 12:53:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 23354 states, 18105 states have (on average 3.9086440209886772) internal successors, (70766), 23353 states have internal predecessors, (70766), 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) [2022-11-16 12:53:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:53:38,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:38,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:53:38,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 52537, now seen corresponding path program 1 times [2022-11-16 12:53:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:38,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086526559] [2022-11-16 12:53:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086526559] [2022-11-16 12:53:38,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086526559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:38,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:38,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:53:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028916029] [2022-11-16 12:53:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:53:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:53:38,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:53:38,657 INFO L87 Difference]: Start difference. First operand has 23354 states, 18105 states have (on average 3.9086440209886772) internal successors, (70766), 23353 states have internal predecessors, (70766), 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) [2022-11-16 12:53:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:39,038 INFO L93 Difference]: Finished difference Result 9545 states and 28628 transitions. [2022-11-16 12:53:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:53:39,038 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 [2022-11-16 12:53:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:39,112 INFO L225 Difference]: With dead ends: 9545 [2022-11-16 12:53:39,112 INFO L226 Difference]: Without dead ends: 9545 [2022-11-16 12:53:39,113 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 [2022-11-16 12:53:39,113 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:39,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:53:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9545 states. [2022-11-16 12:53:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 9545. [2022-11-16 12:53:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 8535 states have (on average 3.3541886350322203) internal successors, (28628), 9544 states have internal predecessors, (28628), 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) [2022-11-16 12:53:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 28628 transitions. [2022-11-16 12:53:39,596 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 28628 transitions. Word has length 2 [2022-11-16 12:53:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:39,596 INFO L495 AbstractCegarLoop]: Abstraction has 9545 states and 28628 transitions. [2022-11-16 12:53:39,596 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) [2022-11-16 12:53:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 28628 transitions. [2022-11-16 12:53:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:53:39,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:39,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:53:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:53:39,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash 52525, now seen corresponding path program 1 times [2022-11-16 12:53:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723643511] [2022-11-16 12:53:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:39,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:39,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723643511] [2022-11-16 12:53:39,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723643511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:39,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:39,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:53:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471966887] [2022-11-16 12:53:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:39,669 INFO L87 Difference]: Start difference. First operand 9545 states and 28628 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) [2022-11-16 12:53:39,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:39,875 INFO L93 Difference]: Finished difference Result 8176 states and 24337 transitions. [2022-11-16 12:53:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:39,876 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 [2022-11-16 12:53:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:39,936 INFO L225 Difference]: With dead ends: 8176 [2022-11-16 12:53:39,936 INFO L226 Difference]: Without dead ends: 8176 [2022-11-16 12:53:39,937 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 [2022-11-16 12:53:39,937 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:39,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 15 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2022-11-16 12:53:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 8176. [2022-11-16 12:53:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8176 states, 7509 states have (on average 3.2410440804368092) internal successors, (24337), 8175 states have internal predecessors, (24337), 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) [2022-11-16 12:53:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 24337 transitions. [2022-11-16 12:53:40,423 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 24337 transitions. Word has length 2 [2022-11-16 12:53:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:40,424 INFO L495 AbstractCegarLoop]: Abstraction has 8176 states and 24337 transitions. [2022-11-16 12:53:40,424 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) [2022-11-16 12:53:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 24337 transitions. [2022-11-16 12:53:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:53:40,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:40,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:53:40,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:53:40,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash 52526, now seen corresponding path program 1 times [2022-11-16 12:53:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:40,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710341691] [2022-11-16 12:53:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:40,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:40,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710341691] [2022-11-16 12:53:40,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710341691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:40,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:40,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:53:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491000152] [2022-11-16 12:53:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:40,458 INFO L87 Difference]: Start difference. First operand 8176 states and 24337 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) [2022-11-16 12:53:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:40,608 INFO L93 Difference]: Finished difference Result 6807 states and 20046 transitions. [2022-11-16 12:53:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:40,609 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 [2022-11-16 12:53:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:40,640 INFO L225 Difference]: With dead ends: 6807 [2022-11-16 12:53:40,641 INFO L226 Difference]: Without dead ends: 6807 [2022-11-16 12:53:40,641 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 [2022-11-16 12:53:40,642 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:40,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 15 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2022-11-16 12:53:40,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6807. [2022-11-16 12:53:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6807 states, 6483 states have (on average 3.092086996760759) internal successors, (20046), 6806 states have internal predecessors, (20046), 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) [2022-11-16 12:53:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 20046 transitions. [2022-11-16 12:53:40,961 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 20046 transitions. Word has length 2 [2022-11-16 12:53:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:40,961 INFO L495 AbstractCegarLoop]: Abstraction has 6807 states and 20046 transitions. [2022-11-16 12:53:40,961 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) [2022-11-16 12:53:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 20046 transitions. [2022-11-16 12:53:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:53:40,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:40,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:53:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:53:40,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash 50520474, now seen corresponding path program 1 times [2022-11-16 12:53:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240792623] [2022-11-16 12:53:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:41,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240792623] [2022-11-16 12:53:41,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240792623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:41,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:41,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:41,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907931369] [2022-11-16 12:53:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:41,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:41,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:41,047 INFO L87 Difference]: Start difference. First operand 6807 states and 20046 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) [2022-11-16 12:53:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:41,208 INFO L93 Difference]: Finished difference Result 6089 states and 17982 transitions. [2022-11-16 12:53:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:41,209 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 [2022-11-16 12:53:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:41,238 INFO L225 Difference]: With dead ends: 6089 [2022-11-16 12:53:41,239 INFO L226 Difference]: Without dead ends: 6089 [2022-11-16 12:53:41,239 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 [2022-11-16 12:53:41,240 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:41,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 15 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2022-11-16 12:53:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 6089. [2022-11-16 12:53:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 5833 states have (on average 3.082804731698954) internal successors, (17982), 6088 states have internal predecessors, (17982), 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) [2022-11-16 12:53:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 17982 transitions. [2022-11-16 12:53:41,535 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 17982 transitions. Word has length 4 [2022-11-16 12:53:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:41,536 INFO L495 AbstractCegarLoop]: Abstraction has 6089 states and 17982 transitions. [2022-11-16 12:53:41,536 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) [2022-11-16 12:53:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 17982 transitions. [2022-11-16 12:53:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:53:41,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:41,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:53:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:53:41,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash 50520475, now seen corresponding path program 1 times [2022-11-16 12:53:41,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:41,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999976086] [2022-11-16 12:53:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:41,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:41,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999976086] [2022-11-16 12:53:41,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999976086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:41,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:41,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:41,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769882775] [2022-11-16 12:53:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:41,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:41,680 INFO L87 Difference]: Start difference. First operand 6089 states and 17982 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) [2022-11-16 12:53:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:41,838 INFO L93 Difference]: Finished difference Result 5411 states and 16030 transitions. [2022-11-16 12:53:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:41,839 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 [2022-11-16 12:53:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:41,868 INFO L225 Difference]: With dead ends: 5411 [2022-11-16 12:53:41,868 INFO L226 Difference]: Without dead ends: 5411 [2022-11-16 12:53:41,868 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 [2022-11-16 12:53:41,869 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:41,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 15 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-11-16 12:53:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411. [2022-11-16 12:53:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5215 states have (on average 3.0738255033557045) internal successors, (16030), 5410 states have internal predecessors, (16030), 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) [2022-11-16 12:53:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 16030 transitions. [2022-11-16 12:53:42,138 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 16030 transitions. Word has length 4 [2022-11-16 12:53:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:42,138 INFO L495 AbstractCegarLoop]: Abstraction has 5411 states and 16030 transitions. [2022-11-16 12:53:42,138 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) [2022-11-16 12:53:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 16030 transitions. [2022-11-16 12:53:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:53:42,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:42,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:53:42,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1818465799, now seen corresponding path program 1 times [2022-11-16 12:53:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722727652] [2022-11-16 12:53:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722727652] [2022-11-16 12:53:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722727652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:42,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:42,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801060453] [2022-11-16 12:53:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:42,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:42,168 INFO L87 Difference]: Start difference. First operand 5411 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 12:53:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:42,386 INFO L93 Difference]: Finished difference Result 6241 states and 18385 transitions. [2022-11-16 12:53:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-16 12:53:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:42,414 INFO L225 Difference]: With dead ends: 6241 [2022-11-16 12:53:42,415 INFO L226 Difference]: Without dead ends: 6241 [2022-11-16 12:53:42,415 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 [2022-11-16 12:53:42,415 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:42,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 29 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:53:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-11-16 12:53:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 5681. [2022-11-16 12:53:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5471 states have (on average 3.0665326265764943) internal successors, (16777), 5680 states have internal predecessors, (16777), 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) [2022-11-16 12:53:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16777 transitions. [2022-11-16 12:53:42,567 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16777 transitions. Word has length 7 [2022-11-16 12:53:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:42,567 INFO L495 AbstractCegarLoop]: Abstraction has 5681 states and 16777 transitions. [2022-11-16 12:53:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 12:53:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16777 transitions. [2022-11-16 12:53:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:53:42,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:42,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:53:42,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1516894037, now seen corresponding path program 1 times [2022-11-16 12:53:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:42,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050402034] [2022-11-16 12:53:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:42,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:42,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050402034] [2022-11-16 12:53:42,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050402034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:42,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:42,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:42,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138985044] [2022-11-16 12:53:42,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:42,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:42,703 INFO L87 Difference]: Start difference. First operand 5681 states and 16777 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 12:53:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:42,815 INFO L93 Difference]: Finished difference Result 4111 states and 12247 transitions. [2022-11-16 12:53:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 [2022-11-16 12:53:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:42,836 INFO L225 Difference]: With dead ends: 4111 [2022-11-16 12:53:42,836 INFO L226 Difference]: Without dead ends: 4111 [2022-11-16 12:53:42,836 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 [2022-11-16 12:53:42,837 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:42,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 15 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2022-11-16 12:53:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4111. [2022-11-16 12:53:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 4021 states have (on average 3.0457597612534197) internal successors, (12247), 4110 states have internal predecessors, (12247), 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) [2022-11-16 12:53:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 12247 transitions. [2022-11-16 12:53:43,025 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 12247 transitions. Word has length 9 [2022-11-16 12:53:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:43,025 INFO L495 AbstractCegarLoop]: Abstraction has 4111 states and 12247 transitions. [2022-11-16 12:53:43,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 12:53:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 12247 transitions. [2022-11-16 12:53:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:53:43,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:43,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:53:43,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1516894040, now seen corresponding path program 1 times [2022-11-16 12:53:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:43,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684444148] [2022-11-16 12:53:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:43,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684444148] [2022-11-16 12:53:43,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684444148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:43,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:43,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648416328] [2022-11-16 12:53:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:43,141 INFO L87 Difference]: Start difference. First operand 4111 states and 12247 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 12:53:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:43,249 INFO L93 Difference]: Finished difference Result 2791 states and 8417 transitions. [2022-11-16 12:53:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:43,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 [2022-11-16 12:53:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:43,259 INFO L225 Difference]: With dead ends: 2791 [2022-11-16 12:53:43,260 INFO L226 Difference]: Without dead ends: 2791 [2022-11-16 12:53:43,260 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 [2022-11-16 12:53:43,260 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:43,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 15 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-11-16 12:53:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2791. [2022-11-16 12:53:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2771 states have (on average 3.037531577047997) internal successors, (8417), 2790 states have internal predecessors, (8417), 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) [2022-11-16 12:53:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 8417 transitions. [2022-11-16 12:53:43,326 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 8417 transitions. Word has length 9 [2022-11-16 12:53:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:43,327 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 8417 transitions. [2022-11-16 12:53:43,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 12:53:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 8417 transitions. [2022-11-16 12:53:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:53:43,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:43,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:53:43,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err20ASSERT_VIOLATIONARRAY_INDEX === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1741323408, now seen corresponding path program 1 times [2022-11-16 12:53:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109208850] [2022-11-16 12:53:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:43,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109208850] [2022-11-16 12:53:43,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109208850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:43,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:43,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:43,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188836682] [2022-11-16 12:53:43,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:43,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:43,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:43,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:43,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:43,374 INFO L87 Difference]: Start difference. First operand 2791 states and 8417 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2022-11-16 12:53:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:43,489 INFO L93 Difference]: Finished difference Result 3227 states and 9665 transitions. [2022-11-16 12:53:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 [2022-11-16 12:53:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:43,507 INFO L225 Difference]: With dead ends: 3227 [2022-11-16 12:53:43,508 INFO L226 Difference]: Without dead ends: 3227 [2022-11-16 12:53:43,508 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 [2022-11-16 12:53:43,509 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:43,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:53:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-11-16 12:53:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3177. [2022-11-16 12:53:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3153 states have (on average 3.0304471931493815) internal successors, (9555), 3176 states have internal predecessors, (9555), 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) [2022-11-16 12:53:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 9555 transitions. [2022-11-16 12:53:43,591 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 9555 transitions. Word has length 11 [2022-11-16 12:53:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:43,591 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 9555 transitions. [2022-11-16 12:53:43,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2022-11-16 12:53:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 9555 transitions. [2022-11-16 12:53:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:53:43,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:43,598 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 12:53:43,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:53:43,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 94 more)] === [2022-11-16 12:53:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash -657878739, now seen corresponding path program 1 times [2022-11-16 12:53:43,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:43,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106660327] [2022-11-16 12:53:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:43,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:43,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:53:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:43,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:53:43,631 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:53:43,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (96 of 97 remaining) [2022-11-16 12:53:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 97 remaining) [2022-11-16 12:53:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 97 remaining) [2022-11-16 12:53:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 97 remaining) [2022-11-16 12:53:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 97 remaining) [2022-11-16 12:53:43,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 97 remaining) [2022-11-16 12:53:43,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 97 remaining) [2022-11-16 12:53:43,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 97 remaining) [2022-11-16 12:53:43,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 97 remaining) [2022-11-16 12:53:43,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (75 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (70 of 97 remaining) [2022-11-16 12:53:43,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30ASSERT_VIOLATIONMEMORY_LEAK (69 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (64 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 97 remaining) [2022-11-16 12:53:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 97 remaining) [2022-11-16 12:53:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 97 remaining) [2022-11-16 12:53:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 97 remaining) [2022-11-16 12:53:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 97 remaining) [2022-11-16 12:53:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (41 of 97 remaining) [2022-11-16 12:53:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 97 remaining) [2022-11-16 12:53:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 97 remaining) [2022-11-16 12:53:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 97 remaining) [2022-11-16 12:53:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (36 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30ASSERT_VIOLATIONMEMORY_LEAK (35 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 97 remaining) [2022-11-16 12:53:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 97 remaining) [2022-11-16 12:53:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 97 remaining) [2022-11-16 12:53:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 97 remaining) [2022-11-16 12:53:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (10 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (5 of 97 remaining) [2022-11-16 12:53:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30ASSERT_VIOLATIONMEMORY_LEAK (4 of 97 remaining) [2022-11-16 12:53:43,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 97 remaining) [2022-11-16 12:53:43,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 97 remaining) [2022-11-16 12:53:43,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 97 remaining) [2022-11-16 12:53:43,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 97 remaining) [2022-11-16 12:53:43,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:53:43,650 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:43,650 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:53:43,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:53:43,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:53:43,772 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:53:43,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 346 transitions, 713 flow [2022-11-16 12:53:43,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 346 transitions, 713 flow [2022-11-16 12:53:43,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 346 transitions, 713 flow [2022-11-16 12:53:43,870 INFO L130 PetriNetUnfolder]: 22/398 cut-off events. [2022-11-16 12:53:43,870 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:53:43,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 398 events. 22/398 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1447 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 318. Up to 8 conditions per place. [2022-11-16 12:53:43,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 72000 [2022-11-16 12:54:02,677 INFO L134 LiptonReduction]: Checked pairs total: 194692 [2022-11-16 12:54:02,677 INFO L136 LiptonReduction]: Total number of compositions: 419 [2022-11-16 12:54:02,678 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 168 places, 176 transitions, 373 flow [2022-11-16 12:54:39,831 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1191669 states, 1023605 states have (on average 4.782619272082493) internal successors, (4895513), 1191668 states have internal predecessors, (4895513), 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) [2022-11-16 12:54:39,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:54:39,833 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;@58b61864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:54:39,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 128 error locations. [2022-11-16 12:54:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 1191669 states, 1023605 states have (on average 4.782619272082493) internal successors, (4895513), 1191668 states have internal predecessors, (4895513), 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) [2022-11-16 12:54:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:54:41,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:41,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:54:41,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 125 more)] === [2022-11-16 12:54:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash 80154, now seen corresponding path program 1 times [2022-11-16 12:54:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:54:41,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182120228] [2022-11-16 12:54:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:54:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:41,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:54:41,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182120228] [2022-11-16 12:54:41,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182120228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:41,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:54:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659997406] [2022-11-16 12:54:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:54:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:54:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:54:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:54:43,183 INFO L87 Difference]: Start difference. First operand has 1191669 states, 1023605 states have (on average 4.782619272082493) internal successors, (4895513), 1191668 states have internal predecessors, (4895513), 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)