./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:46,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:46,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:49:46,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:46,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:46,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:46,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:46,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:46,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:46,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:46,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:46,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:46,598 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:46,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:46,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:46,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:46,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:46,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:46,605 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:49:46,606 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:49:46,606 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:49:46,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:46,607 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:49:46,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:46,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:46,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:46,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:46,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:46,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:46,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:46,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:46,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:46,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:46,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:46,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:46,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:46,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:46,621 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:46,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2023-11-19 07:49:46,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:46,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:46,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:46,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:46,994 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:46,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-19 07:49:49,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:50,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:50,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-19 07:49:50,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/data/050fa8905/82095d0ec59f4c379fab8af155fef78f/FLAGeb1b8148f [2023-11-19 07:49:50,378 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/data/050fa8905/82095d0ec59f4c379fab8af155fef78f [2023-11-19 07:49:50,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:50,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:50,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:50,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:50,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:50,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:50" (1/1) ... [2023-11-19 07:49:50,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213539bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:50, skipping insertion in model container [2023-11-19 07:49:50,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:50" (1/1) ... [2023-11-19 07:49:50,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:50,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:50,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:50,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:51,043 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:49:51,051 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:51,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51 WrapperNode [2023-11-19 07:49:51,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:51,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:51,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:51,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:51,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,179 INFO L138 Inliner]: procedures = 184, calls = 150, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 229 [2023-11-19 07:49:51,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:51,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:51,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:51,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:51,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:51,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:51,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:51,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:51,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (1/1) ... [2023-11-19 07:49:51,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:51,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:51,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 07:49:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 07:49:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2023-11-19 07:49:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2023-11-19 07:49:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:49:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2023-11-19 07:49:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2023-11-19 07:49:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:49:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2023-11-19 07:49:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2023-11-19 07:49:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2023-11-19 07:49:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2023-11-19 07:49:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2023-11-19 07:49:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2023-11-19 07:49:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:49:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2023-11-19 07:49:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2023-11-19 07:49:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2023-11-19 07:49:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2023-11-19 07:49:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2023-11-19 07:49:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2023-11-19 07:49:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 07:49:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:51,582 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:51,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:52,547 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:52,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:52,560 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:49:52,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:52 BoogieIcfgContainer [2023-11-19 07:49:52,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:52,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:52,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:52,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:52,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:50" (1/3) ... [2023-11-19 07:49:52,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452a5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:52, skipping insertion in model container [2023-11-19 07:49:52,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51" (2/3) ... [2023-11-19 07:49:52,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452a5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:52, skipping insertion in model container [2023-11-19 07:49:52,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:52" (3/3) ... [2023-11-19 07:49:52,577 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2023-11-19 07:49:52,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:52,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 162 error locations. [2023-11-19 07:49:52,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:52,706 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=PETRI_NET, 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;@3a18663c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:52,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2023-11-19 07:49:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 203 states have (on average 1.9408866995073892) internal successors, (394), 365 states have internal predecessors, (394), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 07:49:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:49:52,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:52,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:52,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:52,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2239545, now seen corresponding path program 1 times [2023-11-19 07:49:52,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500998615] [2023-11-19 07:49:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:52,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:53,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500998615] [2023-11-19 07:49:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500998615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:53,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:53,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155391877] [2023-11-19 07:49:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:53,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:53,257 INFO L87 Difference]: Start difference. First operand has 404 states, 203 states have (on average 1.9408866995073892) internal successors, (394), 365 states have internal predecessors, (394), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:54,136 INFO L93 Difference]: Finished difference Result 468 states and 559 transitions. [2023-11-19 07:49:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:54,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-19 07:49:54,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:54,164 INFO L225 Difference]: With dead ends: 468 [2023-11-19 07:49:54,165 INFO L226 Difference]: Without dead ends: 466 [2023-11-19 07:49:54,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:54,175 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 581 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:54,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 400 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:49:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-19 07:49:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 397. [2023-11-19 07:49:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 215 states have (on average 1.8093023255813954) internal successors, (389), 353 states have internal predecessors, (389), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 458 transitions. [2023-11-19 07:49:54,290 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 458 transitions. Word has length 7 [2023-11-19 07:49:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:54,290 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 458 transitions. [2023-11-19 07:49:54,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 458 transitions. [2023-11-19 07:49:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:49:54,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:54,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:54,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2239544, now seen corresponding path program 1 times [2023-11-19 07:49:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577299785] [2023-11-19 07:49:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577299785] [2023-11-19 07:49:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577299785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:54,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:54,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166412919] [2023-11-19 07:49:54,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:54,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:54,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:54,490 INFO L87 Difference]: Start difference. First operand 397 states and 458 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:55,110 INFO L93 Difference]: Finished difference Result 434 states and 518 transitions. [2023-11-19 07:49:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:55,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2023-11-19 07:49:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:55,114 INFO L225 Difference]: With dead ends: 434 [2023-11-19 07:49:55,114 INFO L226 Difference]: Without dead ends: 434 [2023-11-19 07:49:55,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:55,116 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 162 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:55,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1013 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:49:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-19 07:49:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 394. [2023-11-19 07:49:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 217 states have (on average 1.7741935483870968) internal successors, (385), 349 states have internal predecessors, (385), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 454 transitions. [2023-11-19 07:49:55,138 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 454 transitions. Word has length 7 [2023-11-19 07:49:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:55,138 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 454 transitions. [2023-11-19 07:49:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 454 transitions. [2023-11-19 07:49:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:49:55,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:55,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:55,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:55,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2001650506, now seen corresponding path program 1 times [2023-11-19 07:49:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:55,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654229926] [2023-11-19 07:49:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:55,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654229926] [2023-11-19 07:49:55,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654229926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:55,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:55,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907866777] [2023-11-19 07:49:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:55,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:55,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:55,284 INFO L87 Difference]: Start difference. First operand 394 states and 454 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:55,932 INFO L93 Difference]: Finished difference Result 433 states and 517 transitions. [2023-11-19 07:49:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:55,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 07:49:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:55,936 INFO L225 Difference]: With dead ends: 433 [2023-11-19 07:49:55,936 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 07:49:55,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:55,938 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 163 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:55,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1267 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:49:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 07:49:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 393. [2023-11-19 07:49:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 217 states have (on average 1.7695852534562213) internal successors, (384), 348 states have internal predecessors, (384), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 453 transitions. [2023-11-19 07:49:55,956 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 453 transitions. Word has length 10 [2023-11-19 07:49:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:55,956 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 453 transitions. [2023-11-19 07:49:55,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 453 transitions. [2023-11-19 07:49:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:49:55,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:55,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:55,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:55,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:55,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2001650507, now seen corresponding path program 1 times [2023-11-19 07:49:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:55,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458205643] [2023-11-19 07:49:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:55,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:56,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:56,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458205643] [2023-11-19 07:49:56,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458205643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:56,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:56,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600305436] [2023-11-19 07:49:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:56,243 INFO L87 Difference]: Start difference. First operand 393 states and 453 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:56,923 INFO L93 Difference]: Finished difference Result 432 states and 516 transitions. [2023-11-19 07:49:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:56,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 07:49:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:56,931 INFO L225 Difference]: With dead ends: 432 [2023-11-19 07:49:56,931 INFO L226 Difference]: Without dead ends: 432 [2023-11-19 07:49:56,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:56,932 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 160 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:56,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1248 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:49:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-19 07:49:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 392. [2023-11-19 07:49:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 217 states have (on average 1.7649769585253456) internal successors, (383), 347 states have internal predecessors, (383), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 452 transitions. [2023-11-19 07:49:56,948 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 452 transitions. Word has length 10 [2023-11-19 07:49:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:56,948 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 452 transitions. [2023-11-19 07:49:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 452 transitions. [2023-11-19 07:49:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:49:56,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:56,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:56,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:56,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:56,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 756199695, now seen corresponding path program 1 times [2023-11-19 07:49:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62561815] [2023-11-19 07:49:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62561815] [2023-11-19 07:49:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62561815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:57,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:57,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353229878] [2023-11-19 07:49:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:57,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:57,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:57,039 INFO L87 Difference]: Start difference. First operand 392 states and 452 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:57,453 INFO L93 Difference]: Finished difference Result 431 states and 515 transitions. [2023-11-19 07:49:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:49:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 07:49:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:57,457 INFO L225 Difference]: With dead ends: 431 [2023-11-19 07:49:57,457 INFO L226 Difference]: Without dead ends: 431 [2023-11-19 07:49:57,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:57,459 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 152 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:57,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 802 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-19 07:49:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2023-11-19 07:49:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 217 states have (on average 1.76036866359447) internal successors, (382), 346 states have internal predecessors, (382), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2023-11-19 07:49:57,476 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 16 [2023-11-19 07:49:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:57,476 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2023-11-19 07:49:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2023-11-19 07:49:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:49:57,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:57,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:57,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:57,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:57,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash 756199696, now seen corresponding path program 1 times [2023-11-19 07:49:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806370241] [2023-11-19 07:49:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806370241] [2023-11-19 07:49:57,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806370241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:57,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863945403] [2023-11-19 07:49:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:57,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:57,593 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:57,994 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2023-11-19 07:49:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:49:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 07:49:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:57,998 INFO L225 Difference]: With dead ends: 430 [2023-11-19 07:49:57,998 INFO L226 Difference]: Without dead ends: 430 [2023-11-19 07:49:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:57,999 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 151 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:57,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 789 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-19 07:49:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 390. [2023-11-19 07:49:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 217 states have (on average 1.7557603686635945) internal successors, (381), 345 states have internal predecessors, (381), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 450 transitions. [2023-11-19 07:49:58,017 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 450 transitions. Word has length 16 [2023-11-19 07:49:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:58,018 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 450 transitions. [2023-11-19 07:49:58,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 450 transitions. [2023-11-19 07:49:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:49:58,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:58,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:58,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:58,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:58,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 842173817, now seen corresponding path program 1 times [2023-11-19 07:49:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649694535] [2023-11-19 07:49:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649694535] [2023-11-19 07:49:58,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649694535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:58,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:58,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:49:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533642987] [2023-11-19 07:49:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:58,302 INFO L87 Difference]: Start difference. First operand 390 states and 450 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:59,187 INFO L93 Difference]: Finished difference Result 438 states and 527 transitions. [2023-11-19 07:49:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 07:49:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:59,196 INFO L225 Difference]: With dead ends: 438 [2023-11-19 07:49:59,196 INFO L226 Difference]: Without dead ends: 438 [2023-11-19 07:49:59,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:59,197 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 611 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:59,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 453 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:49:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-19 07:49:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 371. [2023-11-19 07:49:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 217 states have (on average 1.6589861751152073) internal successors, (360), 326 states have internal predecessors, (360), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-19 07:49:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 429 transitions. [2023-11-19 07:49:59,215 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 429 transitions. Word has length 19 [2023-11-19 07:49:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:59,216 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 429 transitions. [2023-11-19 07:49:59,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:49:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 429 transitions. [2023-11-19 07:49:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:49:59,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:59,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:59,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:49:59,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1315124258, now seen corresponding path program 1 times [2023-11-19 07:49:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715716996] [2023-11-19 07:49:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:49:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:59,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715716996] [2023-11-19 07:49:59,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715716996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:49:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001570039] [2023-11-19 07:49:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:59,421 INFO L87 Difference]: Start difference. First operand 371 states and 429 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:00,270 INFO L93 Difference]: Finished difference Result 444 states and 544 transitions. [2023-11-19 07:50:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-19 07:50:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:00,276 INFO L225 Difference]: With dead ends: 444 [2023-11-19 07:50:00,276 INFO L226 Difference]: Without dead ends: 444 [2023-11-19 07:50:00,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:00,278 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 229 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1594 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:50:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-19 07:50:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 394. [2023-11-19 07:50:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 236 states have (on average 1.6398305084745763) internal successors, (387), 346 states have internal predecessors, (387), 33 states have call successors, (33), 14 states have call predecessors, (33), 15 states have return successors, (41), 33 states have call predecessors, (41), 33 states have call successors, (41) [2023-11-19 07:50:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 461 transitions. [2023-11-19 07:50:00,312 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 461 transitions. Word has length 25 [2023-11-19 07:50:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:00,312 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 461 transitions. [2023-11-19 07:50:00,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 461 transitions. [2023-11-19 07:50:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:50:00,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:00,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:00,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:00,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:00,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1315124257, now seen corresponding path program 1 times [2023-11-19 07:50:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:00,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023049278] [2023-11-19 07:50:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023049278] [2023-11-19 07:50:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023049278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457202328] [2023-11-19 07:50:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:00,651 INFO L87 Difference]: Start difference. First operand 394 states and 461 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:01,650 INFO L93 Difference]: Finished difference Result 443 states and 543 transitions. [2023-11-19 07:50:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:50:01,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-19 07:50:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:01,654 INFO L225 Difference]: With dead ends: 443 [2023-11-19 07:50:01,654 INFO L226 Difference]: Without dead ends: 443 [2023-11-19 07:50:01,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:01,658 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 220 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:01,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1632 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-19 07:50:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 394. [2023-11-19 07:50:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 236 states have (on average 1.6355932203389831) internal successors, (386), 346 states have internal predecessors, (386), 33 states have call successors, (33), 14 states have call predecessors, (33), 15 states have return successors, (41), 33 states have call predecessors, (41), 33 states have call successors, (41) [2023-11-19 07:50:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 460 transitions. [2023-11-19 07:50:01,694 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 460 transitions. Word has length 25 [2023-11-19 07:50:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:01,697 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 460 transitions. [2023-11-19 07:50:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 460 transitions. [2023-11-19 07:50:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:50:01,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:01,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:50:01,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:01,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2125445133, now seen corresponding path program 1 times [2023-11-19 07:50:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:01,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349916515] [2023-11-19 07:50:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:01,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349916515] [2023-11-19 07:50:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349916515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:01,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422347851] [2023-11-19 07:50:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:01,916 INFO L87 Difference]: Start difference. First operand 394 states and 460 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:02,879 INFO L93 Difference]: Finished difference Result 527 states and 655 transitions. [2023-11-19 07:50:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-19 07:50:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:02,884 INFO L225 Difference]: With dead ends: 527 [2023-11-19 07:50:02,884 INFO L226 Difference]: Without dead ends: 527 [2023-11-19 07:50:02,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:02,886 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 370 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:02,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1506 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-19 07:50:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 431. [2023-11-19 07:50:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 264 states have (on average 1.6098484848484849) internal successors, (425), 379 states have internal predecessors, (425), 38 states have call successors, (38), 17 states have call predecessors, (38), 19 states have return successors, (57), 34 states have call predecessors, (57), 38 states have call successors, (57) [2023-11-19 07:50:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 520 transitions. [2023-11-19 07:50:02,909 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 520 transitions. Word has length 26 [2023-11-19 07:50:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 520 transitions. [2023-11-19 07:50:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 520 transitions. [2023-11-19 07:50:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:50:02,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:02,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:50:02,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:02,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2125445132, now seen corresponding path program 1 times [2023-11-19 07:50:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251970599] [2023-11-19 07:50:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:03,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:03,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251970599] [2023-11-19 07:50:03,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251970599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:03,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:03,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939772118] [2023-11-19 07:50:03,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:03,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:03,219 INFO L87 Difference]: Start difference. First operand 431 states and 520 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:04,082 INFO L93 Difference]: Finished difference Result 486 states and 610 transitions. [2023-11-19 07:50:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:04,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-19 07:50:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:04,086 INFO L225 Difference]: With dead ends: 486 [2023-11-19 07:50:04,086 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 07:50:04,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:04,087 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 222 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:04,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1643 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 07:50:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 438. [2023-11-19 07:50:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 270 states have (on average 1.6074074074074074) internal successors, (434), 384 states have internal predecessors, (434), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (54), 35 states have call predecessors, (54), 39 states have call successors, (54) [2023-11-19 07:50:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 527 transitions. [2023-11-19 07:50:04,105 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 527 transitions. Word has length 26 [2023-11-19 07:50:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:04,105 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 527 transitions. [2023-11-19 07:50:04,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 527 transitions. [2023-11-19 07:50:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:04,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:04,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:04,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:50:04,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:04,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1475077732, now seen corresponding path program 1 times [2023-11-19 07:50:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992405922] [2023-11-19 07:50:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:04,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:04,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:04,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992405922] [2023-11-19 07:50:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992405922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074960838] [2023-11-19 07:50:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:04,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:04,390 INFO L87 Difference]: Start difference. First operand 438 states and 527 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:05,291 INFO L93 Difference]: Finished difference Result 526 states and 669 transitions. [2023-11-19 07:50:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-19 07:50:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:05,296 INFO L225 Difference]: With dead ends: 526 [2023-11-19 07:50:05,296 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 07:50:05,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:05,298 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 253 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:05,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1638 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 07:50:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 474. [2023-11-19 07:50:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 299 states have (on average 1.585284280936455) internal successors, (474), 415 states have internal predecessors, (474), 42 states have call successors, (42), 20 states have call predecessors, (42), 23 states have return successors, (62), 38 states have call predecessors, (62), 42 states have call successors, (62) [2023-11-19 07:50:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 578 transitions. [2023-11-19 07:50:05,321 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 578 transitions. Word has length 27 [2023-11-19 07:50:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:05,323 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 578 transitions. [2023-11-19 07:50:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 578 transitions. [2023-11-19 07:50:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:05,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:05,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:05,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:50:05,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:05,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1475077733, now seen corresponding path program 1 times [2023-11-19 07:50:05,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:05,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097517741] [2023-11-19 07:50:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097517741] [2023-11-19 07:50:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097517741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:05,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308806370] [2023-11-19 07:50:05,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:05,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:05,545 INFO L87 Difference]: Start difference. First operand 474 states and 578 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:06,439 INFO L93 Difference]: Finished difference Result 589 states and 761 transitions. [2023-11-19 07:50:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:06,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-19 07:50:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:06,445 INFO L225 Difference]: With dead ends: 589 [2023-11-19 07:50:06,445 INFO L226 Difference]: Without dead ends: 589 [2023-11-19 07:50:06,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:06,446 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 321 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:06,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1563 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-19 07:50:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 507. [2023-11-19 07:50:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 327 states have (on average 1.5657492354740061) internal successors, (512), 444 states have internal predecessors, (512), 43 states have call successors, (43), 22 states have call predecessors, (43), 27 states have return successors, (68), 40 states have call predecessors, (68), 43 states have call successors, (68) [2023-11-19 07:50:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 623 transitions. [2023-11-19 07:50:06,470 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 623 transitions. Word has length 27 [2023-11-19 07:50:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:06,470 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 623 transitions. [2023-11-19 07:50:06,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 623 transitions. [2023-11-19 07:50:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:50:06,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:06,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:06,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:50:06,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:06,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1035652281, now seen corresponding path program 1 times [2023-11-19 07:50:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030377481] [2023-11-19 07:50:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:06,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030377481] [2023-11-19 07:50:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030377481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:06,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:06,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:50:06,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636819504] [2023-11-19 07:50:06,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:06,959 INFO L87 Difference]: Start difference. First operand 507 states and 623 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:08,865 INFO L93 Difference]: Finished difference Result 791 states and 1065 transitions. [2023-11-19 07:50:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:50:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-19 07:50:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:08,873 INFO L225 Difference]: With dead ends: 791 [2023-11-19 07:50:08,873 INFO L226 Difference]: Without dead ends: 791 [2023-11-19 07:50:08,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:50:08,874 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 777 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:08,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1252 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 07:50:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-11-19 07:50:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 688. [2023-11-19 07:50:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 471 states have (on average 1.4968152866242037) internal successors, (705), 591 states have internal predecessors, (705), 60 states have call successors, (60), 32 states have call predecessors, (60), 47 states have return successors, (150), 64 states have call predecessors, (150), 60 states have call successors, (150) [2023-11-19 07:50:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 915 transitions. [2023-11-19 07:50:08,912 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 915 transitions. Word has length 26 [2023-11-19 07:50:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:08,912 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 915 transitions. [2023-11-19 07:50:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 915 transitions. [2023-11-19 07:50:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:08,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:08,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:50:08,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:08,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1506223536, now seen corresponding path program 1 times [2023-11-19 07:50:08,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:08,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441864076] [2023-11-19 07:50:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441864076] [2023-11-19 07:50:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441864076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:09,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:09,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:09,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960733668] [2023-11-19 07:50:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:09,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:09,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:09,098 INFO L87 Difference]: Start difference. First operand 688 states and 915 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:09,985 INFO L93 Difference]: Finished difference Result 803 states and 1110 transitions. [2023-11-19 07:50:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:50:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:09,993 INFO L225 Difference]: With dead ends: 803 [2023-11-19 07:50:09,993 INFO L226 Difference]: Without dead ends: 803 [2023-11-19 07:50:09,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:09,996 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 313 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:09,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1584 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-19 07:50:10,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 754. [2023-11-19 07:50:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 528 states have (on average 1.4867424242424243) internal successors, (785), 651 states have internal predecessors, (785), 62 states have call successors, (62), 35 states have call predecessors, (62), 54 states have return successors, (167), 67 states have call predecessors, (167), 62 states have call successors, (167) [2023-11-19 07:50:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1014 transitions. [2023-11-19 07:50:10,034 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1014 transitions. Word has length 28 [2023-11-19 07:50:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:10,034 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1014 transitions. [2023-11-19 07:50:10,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1014 transitions. [2023-11-19 07:50:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:10,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:10,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:10,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:50:10,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:10,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1506223537, now seen corresponding path program 1 times [2023-11-19 07:50:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:10,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593424589] [2023-11-19 07:50:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:10,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:10,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593424589] [2023-11-19 07:50:10,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593424589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:10,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:10,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:10,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181393697] [2023-11-19 07:50:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:10,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:10,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:10,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:10,354 INFO L87 Difference]: Start difference. First operand 754 states and 1014 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:11,398 INFO L93 Difference]: Finished difference Result 878 states and 1211 transitions. [2023-11-19 07:50:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:50:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:11,410 INFO L225 Difference]: With dead ends: 878 [2023-11-19 07:50:11,411 INFO L226 Difference]: Without dead ends: 878 [2023-11-19 07:50:11,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:11,412 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 283 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:11,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1636 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-19 07:50:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 846. [2023-11-19 07:50:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 603 states have (on average 1.4693200663349917) internal successors, (886), 730 states have internal predecessors, (886), 69 states have call successors, (69), 39 states have call predecessors, (69), 64 states have return successors, (197), 76 states have call predecessors, (197), 69 states have call successors, (197) [2023-11-19 07:50:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1152 transitions. [2023-11-19 07:50:11,456 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1152 transitions. Word has length 28 [2023-11-19 07:50:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:11,457 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1152 transitions. [2023-11-19 07:50:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1152 transitions. [2023-11-19 07:50:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:50:11,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:11,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:11,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:50:11,461 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:11,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash 832637272, now seen corresponding path program 1 times [2023-11-19 07:50:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173396195] [2023-11-19 07:50:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173396195] [2023-11-19 07:50:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173396195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:11,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575799224] [2023-11-19 07:50:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:11,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:11,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:11,622 INFO L87 Difference]: Start difference. First operand 846 states and 1152 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:12,237 INFO L93 Difference]: Finished difference Result 880 states and 1216 transitions. [2023-11-19 07:50:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:12,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-19 07:50:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:12,245 INFO L225 Difference]: With dead ends: 880 [2023-11-19 07:50:12,245 INFO L226 Difference]: Without dead ends: 880 [2023-11-19 07:50:12,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:12,246 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 534 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:12,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 568 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:50:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-11-19 07:50:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 845. [2023-11-19 07:50:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 603 states have (on average 1.4593698175787728) internal successors, (880), 729 states have internal predecessors, (880), 69 states have call successors, (69), 39 states have call predecessors, (69), 64 states have return successors, (197), 76 states have call predecessors, (197), 69 states have call successors, (197) [2023-11-19 07:50:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1146 transitions. [2023-11-19 07:50:12,300 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1146 transitions. Word has length 32 [2023-11-19 07:50:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:12,300 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1146 transitions. [2023-11-19 07:50:12,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1146 transitions. [2023-11-19 07:50:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:50:12,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:12,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:12,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:50:12,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:12,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:12,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1971436471, now seen corresponding path program 1 times [2023-11-19 07:50:12,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:12,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236293215] [2023-11-19 07:50:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:12,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 07:50:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:50:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236293215] [2023-11-19 07:50:12,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236293215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:12,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:12,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644391178] [2023-11-19 07:50:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:12,434 INFO L87 Difference]: Start difference. First operand 845 states and 1146 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:12,943 INFO L93 Difference]: Finished difference Result 851 states and 1154 transitions. [2023-11-19 07:50:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-19 07:50:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:12,952 INFO L225 Difference]: With dead ends: 851 [2023-11-19 07:50:12,952 INFO L226 Difference]: Without dead ends: 851 [2023-11-19 07:50:12,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:12,953 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 179 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:12,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 925 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:50:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-19 07:50:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 843. [2023-11-19 07:50:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 603 states have (on average 1.4560530679933665) internal successors, (878), 727 states have internal predecessors, (878), 69 states have call successors, (69), 39 states have call predecessors, (69), 64 states have return successors, (197), 76 states have call predecessors, (197), 69 states have call successors, (197) [2023-11-19 07:50:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1144 transitions. [2023-11-19 07:50:13,002 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1144 transitions. Word has length 34 [2023-11-19 07:50:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:13,003 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1144 transitions. [2023-11-19 07:50:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1144 transitions. [2023-11-19 07:50:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:50:13,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:13,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:50:13,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1971436472, now seen corresponding path program 1 times [2023-11-19 07:50:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511644609] [2023-11-19 07:50:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:13,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 07:50:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:50:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511644609] [2023-11-19 07:50:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511644609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:13,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:50:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900113668] [2023-11-19 07:50:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:13,406 INFO L87 Difference]: Start difference. First operand 843 states and 1144 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:14,227 INFO L93 Difference]: Finished difference Result 875 states and 1186 transitions. [2023-11-19 07:50:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:14,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-19 07:50:14,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:14,238 INFO L225 Difference]: With dead ends: 875 [2023-11-19 07:50:14,239 INFO L226 Difference]: Without dead ends: 875 [2023-11-19 07:50:14,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:14,240 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 230 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:14,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2576 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:50:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-19 07:50:14,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 847. [2023-11-19 07:50:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 605 states have (on average 1.4528925619834712) internal successors, (879), 729 states have internal predecessors, (879), 71 states have call successors, (71), 39 states have call predecessors, (71), 64 states have return successors, (205), 78 states have call predecessors, (205), 71 states have call successors, (205) [2023-11-19 07:50:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1155 transitions. [2023-11-19 07:50:14,278 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1155 transitions. Word has length 34 [2023-11-19 07:50:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:14,279 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1155 transitions. [2023-11-19 07:50:14,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1155 transitions. [2023-11-19 07:50:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:50:14,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:14,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:50:14,281 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2019576891, now seen corresponding path program 1 times [2023-11-19 07:50:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697141369] [2023-11-19 07:50:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:14,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:14,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697141369] [2023-11-19 07:50:14,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697141369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:14,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:14,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:50:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247802315] [2023-11-19 07:50:14,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:14,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:14,691 INFO L87 Difference]: Start difference. First operand 847 states and 1155 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,512 INFO L93 Difference]: Finished difference Result 793 states and 1063 transitions. [2023-11-19 07:50:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-19 07:50:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,520 INFO L225 Difference]: With dead ends: 793 [2023-11-19 07:50:15,520 INFO L226 Difference]: Without dead ends: 793 [2023-11-19 07:50:15,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:50:15,522 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 237 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2916 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:50:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-19 07:50:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 759. [2023-11-19 07:50:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 537 states have (on average 1.4767225325884543) internal successors, (793), 655 states have internal predecessors, (793), 64 states have call successors, (64), 36 states have call predecessors, (64), 51 states have return successors, (164), 67 states have call predecessors, (164), 64 states have call successors, (164) [2023-11-19 07:50:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1021 transitions. [2023-11-19 07:50:15,563 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1021 transitions. Word has length 33 [2023-11-19 07:50:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,563 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1021 transitions. [2023-11-19 07:50:15,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1021 transitions. [2023-11-19 07:50:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:50:15,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:50:15,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:15,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1130820154, now seen corresponding path program 1 times [2023-11-19 07:50:15,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051718035] [2023-11-19 07:50:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:16,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051718035] [2023-11-19 07:50:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051718035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:50:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108439950] [2023-11-19 07:50:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:16,016 INFO L87 Difference]: Start difference. First operand 759 states and 1021 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,928 INFO L93 Difference]: Finished difference Result 634 states and 830 transitions. [2023-11-19 07:50:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 07:50:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-11-19 07:50:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,933 INFO L225 Difference]: With dead ends: 634 [2023-11-19 07:50:17,933 INFO L226 Difference]: Without dead ends: 634 [2023-11-19 07:50:17,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2023-11-19 07:50:17,935 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1275 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 1136 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-19 07:50:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 543. [2023-11-19 07:50:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 357 states have (on average 1.5434173669467788) internal successors, (551), 470 states have internal predecessors, (551), 49 states have call successors, (49), 27 states have call predecessors, (49), 30 states have return successors, (109), 45 states have call predecessors, (109), 49 states have call successors, (109) [2023-11-19 07:50:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 709 transitions. [2023-11-19 07:50:17,958 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 709 transitions. Word has length 32 [2023-11-19 07:50:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 709 transitions. [2023-11-19 07:50:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 709 transitions. [2023-11-19 07:50:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:50:17,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:50:17,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1017155110, now seen corresponding path program 1 times [2023-11-19 07:50:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012355498] [2023-11-19 07:50:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012355498] [2023-11-19 07:50:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012355498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:18,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:18,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:50:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911819823] [2023-11-19 07:50:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:18,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:18,093 INFO L87 Difference]: Start difference. First operand 543 states and 709 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:18,522 INFO L93 Difference]: Finished difference Result 603 states and 790 transitions. [2023-11-19 07:50:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:50:18,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-11-19 07:50:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:18,526 INFO L225 Difference]: With dead ends: 603 [2023-11-19 07:50:18,527 INFO L226 Difference]: Without dead ends: 601 [2023-11-19 07:50:18,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:18,527 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 160 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:18,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1336 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-19 07:50:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 561. [2023-11-19 07:50:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 372 states have (on average 1.5295698924731183) internal successors, (569), 486 states have internal predecessors, (569), 49 states have call successors, (49), 29 states have call predecessors, (49), 33 states have return successors, (105), 45 states have call predecessors, (105), 49 states have call successors, (105) [2023-11-19 07:50:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 723 transitions. [2023-11-19 07:50:18,548 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 723 transitions. Word has length 37 [2023-11-19 07:50:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:18,549 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 723 transitions. [2023-11-19 07:50:18,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 723 transitions. [2023-11-19 07:50:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:50:18,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:18,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:50:18,550 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:18,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -111643918, now seen corresponding path program 1 times [2023-11-19 07:50:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684003573] [2023-11-19 07:50:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:18,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:18,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684003573] [2023-11-19 07:50:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684003573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:50:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031193354] [2023-11-19 07:50:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:18,878 INFO L87 Difference]: Start difference. First operand 561 states and 723 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:50:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:19,897 INFO L93 Difference]: Finished difference Result 605 states and 792 transitions. [2023-11-19 07:50:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:19,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2023-11-19 07:50:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,902 INFO L225 Difference]: With dead ends: 605 [2023-11-19 07:50:19,902 INFO L226 Difference]: Without dead ends: 598 [2023-11-19 07:50:19,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:19,903 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 281 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:19,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2099 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-11-19 07:50:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 561. [2023-11-19 07:50:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 372 states have (on average 1.5268817204301075) internal successors, (568), 486 states have internal predecessors, (568), 49 states have call successors, (49), 29 states have call predecessors, (49), 33 states have return successors, (106), 45 states have call predecessors, (106), 49 states have call successors, (106) [2023-11-19 07:50:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 723 transitions. [2023-11-19 07:50:19,927 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 723 transitions. Word has length 36 [2023-11-19 07:50:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,927 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 723 transitions. [2023-11-19 07:50:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:50:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 723 transitions. [2023-11-19 07:50:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:50:19,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:50:19,929 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:19,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 936677628, now seen corresponding path program 1 times [2023-11-19 07:50:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646341239] [2023-11-19 07:50:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646341239] [2023-11-19 07:50:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646341239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:50:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248052279] [2023-11-19 07:50:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:20,287 INFO L87 Difference]: Start difference. First operand 561 states and 723 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:22,059 INFO L93 Difference]: Finished difference Result 853 states and 1212 transitions. [2023-11-19 07:50:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:50:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-11-19 07:50:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:22,067 INFO L225 Difference]: With dead ends: 853 [2023-11-19 07:50:22,067 INFO L226 Difference]: Without dead ends: 847 [2023-11-19 07:50:22,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-11-19 07:50:22,068 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 644 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 2658 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:50:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-19 07:50:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2023-11-19 07:50:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 559 states have (on average 1.4525939177101967) internal successors, (812), 667 states have internal predecessors, (812), 64 states have call successors, (64), 41 states have call predecessors, (64), 65 states have return successors, (281), 86 states have call predecessors, (281), 64 states have call successors, (281) [2023-11-19 07:50:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1157 transitions. [2023-11-19 07:50:22,113 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1157 transitions. Word has length 39 [2023-11-19 07:50:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:22,113 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1157 transitions. [2023-11-19 07:50:22,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1157 transitions. [2023-11-19 07:50:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:50:22,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:22,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:22,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 07:50:22,115 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:22,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 591000734, now seen corresponding path program 1 times [2023-11-19 07:50:22,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:22,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309562895] [2023-11-19 07:50:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:23,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309562895] [2023-11-19 07:50:23,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309562895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:23,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:23,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:50:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484448092] [2023-11-19 07:50:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:23,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:50:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:50:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:23,011 INFO L87 Difference]: Start difference. First operand 795 states and 1157 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,114 INFO L93 Difference]: Finished difference Result 864 states and 1286 transitions. [2023-11-19 07:50:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-19 07:50:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,121 INFO L225 Difference]: With dead ends: 864 [2023-11-19 07:50:24,122 INFO L226 Difference]: Without dead ends: 864 [2023-11-19 07:50:24,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:50:24,142 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 735 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1523 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-11-19 07:50:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 828. [2023-11-19 07:50:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 585 states have (on average 1.4341880341880342) internal successors, (839), 691 states have internal predecessors, (839), 65 states have call successors, (65), 42 states have call predecessors, (65), 71 states have return successors, (315), 94 states have call predecessors, (315), 65 states have call successors, (315) [2023-11-19 07:50:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1219 transitions. [2023-11-19 07:50:24,201 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1219 transitions. Word has length 41 [2023-11-19 07:50:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,202 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1219 transitions. [2023-11-19 07:50:24,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1219 transitions. [2023-11-19 07:50:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:50:24,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:24,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:24,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 07:50:24,204 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:24,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 591000735, now seen corresponding path program 1 times [2023-11-19 07:50:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199730100] [2023-11-19 07:50:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199730100] [2023-11-19 07:50:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199730100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:25,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 07:50:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502302111] [2023-11-19 07:50:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:50:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:50:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:25,725 INFO L87 Difference]: Start difference. First operand 828 states and 1219 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:27,240 INFO L93 Difference]: Finished difference Result 863 states and 1285 transitions. [2023-11-19 07:50:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-19 07:50:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:27,247 INFO L225 Difference]: With dead ends: 863 [2023-11-19 07:50:27,247 INFO L226 Difference]: Without dead ends: 863 [2023-11-19 07:50:27,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:50:27,248 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 728 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:27,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1543 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:50:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-19 07:50:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 828. [2023-11-19 07:50:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 585 states have (on average 1.4324786324786325) internal successors, (838), 691 states have internal predecessors, (838), 65 states have call successors, (65), 42 states have call predecessors, (65), 71 states have return successors, (315), 94 states have call predecessors, (315), 65 states have call successors, (315) [2023-11-19 07:50:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1218 transitions. [2023-11-19 07:50:27,293 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1218 transitions. Word has length 41 [2023-11-19 07:50:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:27,293 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1218 transitions. [2023-11-19 07:50:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1218 transitions. [2023-11-19 07:50:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:50:27,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:27,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 07:50:27,295 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1016026559, now seen corresponding path program 1 times [2023-11-19 07:50:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145689763] [2023-11-19 07:50:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145689763] [2023-11-19 07:50:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145689763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:27,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141963853] [2023-11-19 07:50:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:27,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:27,397 INFO L87 Difference]: Start difference. First operand 828 states and 1218 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:27,829 INFO L93 Difference]: Finished difference Result 830 states and 1218 transitions. [2023-11-19 07:50:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2023-11-19 07:50:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:27,837 INFO L225 Difference]: With dead ends: 830 [2023-11-19 07:50:27,838 INFO L226 Difference]: Without dead ends: 830 [2023-11-19 07:50:27,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:27,839 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 281 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:27,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 740 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-19 07:50:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 826. [2023-11-19 07:50:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 585 states have (on average 1.4256410256410257) internal successors, (834), 689 states have internal predecessors, (834), 65 states have call successors, (65), 42 states have call predecessors, (65), 71 states have return successors, (315), 94 states have call predecessors, (315), 65 states have call successors, (315) [2023-11-19 07:50:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1214 transitions. [2023-11-19 07:50:27,883 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1214 transitions. Word has length 43 [2023-11-19 07:50:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:27,884 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1214 transitions. [2023-11-19 07:50:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1214 transitions. [2023-11-19 07:50:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:50:27,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:27,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 07:50:27,885 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:27,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1016026560, now seen corresponding path program 1 times [2023-11-19 07:50:27,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:27,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444613956] [2023-11-19 07:50:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444613956] [2023-11-19 07:50:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444613956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:28,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616483400] [2023-11-19 07:50:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:28,047 INFO L87 Difference]: Start difference. First operand 826 states and 1214 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:28,454 INFO L93 Difference]: Finished difference Result 828 states and 1214 transitions. [2023-11-19 07:50:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2023-11-19 07:50:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:28,461 INFO L225 Difference]: With dead ends: 828 [2023-11-19 07:50:28,462 INFO L226 Difference]: Without dead ends: 828 [2023-11-19 07:50:28,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:28,462 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 275 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:28,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 743 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-19 07:50:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 824. [2023-11-19 07:50:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 585 states have (on average 1.4188034188034189) internal successors, (830), 687 states have internal predecessors, (830), 65 states have call successors, (65), 42 states have call predecessors, (65), 71 states have return successors, (315), 94 states have call predecessors, (315), 65 states have call successors, (315) [2023-11-19 07:50:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1210 transitions. [2023-11-19 07:50:28,504 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1210 transitions. Word has length 43 [2023-11-19 07:50:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:28,505 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1210 transitions. [2023-11-19 07:50:28,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1210 transitions. [2023-11-19 07:50:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:50:28,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:28,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:28,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-19 07:50:28,506 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:28,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:28,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1006072562, now seen corresponding path program 1 times [2023-11-19 07:50:28,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:28,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727531196] [2023-11-19 07:50:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:28,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727531196] [2023-11-19 07:50:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727531196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:50:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181206021] [2023-11-19 07:50:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:28,726 INFO L87 Difference]: Start difference. First operand 824 states and 1210 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:29,655 INFO L93 Difference]: Finished difference Result 865 states and 1279 transitions. [2023-11-19 07:50:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-11-19 07:50:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:29,663 INFO L225 Difference]: With dead ends: 865 [2023-11-19 07:50:29,664 INFO L226 Difference]: Without dead ends: 865 [2023-11-19 07:50:29,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:29,665 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 213 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:29,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1786 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-11-19 07:50:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 849. [2023-11-19 07:50:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 606 states have (on average 1.4174917491749175) internal successors, (859), 709 states have internal predecessors, (859), 66 states have call successors, (66), 44 states have call predecessors, (66), 74 states have return successors, (318), 95 states have call predecessors, (318), 66 states have call successors, (318) [2023-11-19 07:50:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1243 transitions. [2023-11-19 07:50:29,707 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1243 transitions. Word has length 52 [2023-11-19 07:50:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:29,708 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1243 transitions. [2023-11-19 07:50:29,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1243 transitions. [2023-11-19 07:50:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:50:29,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:29,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-19 07:50:29,709 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-19 07:50:29,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1006072561, now seen corresponding path program 1 times [2023-11-19 07:50:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539511125] [2023-11-19 07:50:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:50:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:50:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539511125] [2023-11-19 07:50:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539511125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560663958] [2023-11-19 07:50:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:30,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:30,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:30,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:30,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d60505f-2bbd-4cec-ba17-8743be7f50d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:50:30,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:30,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:50:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:30,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560663958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:30,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:30,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2023-11-19 07:50:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935622472] [2023-11-19 07:50:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:30,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:30,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:50:30,969 INFO L87 Difference]: Start difference. First operand 849 states and 1243 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)