./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:50:50,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:50:50,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:50:50,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:50:50,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:50:50,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:50:50,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:50:50,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:50:50,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:50:50,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:50:50,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:50:50,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:50:50,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:50:50,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:50:50,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:50:50,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:50:50,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:50:50,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:50:50,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:50:50,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:50:50,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:50:50,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:50:50,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:50:50,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:50:50,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:50:50,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:50:50,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:50:50,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:50:50,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:50:50,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:50:50,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:50:50,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:50:50,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:50:50,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:50:50,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:50:50,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:50:50,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:50:50,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:50:50,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:50:50,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:50:50,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:50:50,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:50:50,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:50:50,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:50:50,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:50:50,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:50:50,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:50:50,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:50:50,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:50:50,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:50:50,463 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:50:50,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:50:50,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:50:50,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:50:50,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:50:50,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:50:50,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:50:50,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:50:50,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:50:50,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:50:50,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:50:50,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:50:50,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:50:50,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:50:50,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:50:50,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:50:50,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:50:50,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:50:50,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:50:50,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:50:50,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:50:50,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:50:50,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2022-11-20 11:50:50,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:50:50,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:50:50,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:50:50,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:50:50,773 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:50:50,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-20 11:50:53,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:50:54,568 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:50:54,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-20 11:50:54,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/data/9126a5c42/88e80edc7d304954bd8b8f947b84352f/FLAG1b32f81a8 [2022-11-20 11:50:54,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/data/9126a5c42/88e80edc7d304954bd8b8f947b84352f [2022-11-20 11:50:54,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:50:54,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:50:54,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:50:54,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:50:54,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:50:54,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:54" (1/1) ... [2022-11-20 11:50:54,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@889e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:54, skipping insertion in model container [2022-11-20 11:50:54,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:54" (1/1) ... [2022-11-20 11:50:54,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:50:54,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:50:56,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-20 11:50:57,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:50:57,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:50:57,719 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-20 11:50:57,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:50:57,894 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:50:57,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57 WrapperNode [2022-11-20 11:50:57,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:50:57,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:50:57,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:50:57,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:50:57,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:58,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:58,548 INFO L138 Inliner]: procedures = 170, calls = 6963, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 16666 [2022-11-20 11:50:58,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:50:58,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:50:58,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:50:58,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:50:58,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:58,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:58,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:58,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:50:59,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:50:59,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:50:59,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:50:59,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (1/1) ... [2022-11-20 11:50:59,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:50:59,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:50:59,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:50:59,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:50:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-20 11:50:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-20 11:50:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-20 11:50:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-20 11:50:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:50:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 11:50:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 11:50:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-20 11:50:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-20 11:50:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-20 11:50:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-20 11:50:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:50:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:50:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-20 11:50:59,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-20 11:50:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:50:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-20 11:50:59,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-20 11:50:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-20 11:50:59,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-20 11:50:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-20 11:50:59,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-20 11:50:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-20 11:50:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-20 11:50:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:50:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:50:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-20 11:50:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-20 11:50:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-20 11:50:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-20 11:50:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:50:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:50:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:50:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-20 11:50:59,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-20 11:50:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:50:59,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:50:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-20 11:50:59,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-20 11:50:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-20 11:50:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-20 11:50:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-20 11:50:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-20 11:50:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-20 11:50:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-20 11:50:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:50:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:50:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-20 11:50:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-20 11:50:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-20 11:50:59,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-20 11:50:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-20 11:50:59,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-20 11:50:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 11:50:59,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 11:50:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-20 11:50:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-20 11:50:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-20 11:50:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-20 11:50:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:50:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:50:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:50:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-20 11:50:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-20 11:50:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-20 11:50:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-20 11:50:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-20 11:50:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-20 11:50:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-20 11:50:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-20 11:50:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:50:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:50:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:50:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-20 11:50:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-20 11:50:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-20 11:50:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-20 11:50:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-20 11:50:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-20 11:50:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-20 11:50:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-20 11:50:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-20 11:50:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-20 11:50:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:50:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:50:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-20 11:50:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-20 11:50:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-20 11:50:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-20 11:50:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-20 11:50:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-20 11:50:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-20 11:50:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-20 11:50:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:50:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:50:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-20 11:50:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-20 11:50:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-20 11:50:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-20 11:50:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:50:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 11:50:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 11:50:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-20 11:50:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-20 11:50:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 11:50:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-20 11:50:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-20 11:50:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:50:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:50:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-20 11:50:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-20 11:51:01,285 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:51:01,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:51:14,881 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:51:14,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:51:14,912 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:51:14,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14 BoogieIcfgContainer [2022-11-20 11:51:14,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:51:14,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:51:14,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:51:14,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:51:14,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:50:54" (1/3) ... [2022-11-20 11:51:14,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6034f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:57" (2/3) ... [2022-11-20 11:51:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6034f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14" (3/3) ... [2022-11-20 11:51:14,927 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-20 11:51:14,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:51:14,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:51:15,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:51:15,092 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5ddcd222, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:51:15,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:51:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 5288 states, 3945 states have (on average 1.5275031685678073) internal successors, (6026), 3957 states have internal predecessors, (6026), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2022-11-20 11:51:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:51:15,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:15,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:15,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1058879928, now seen corresponding path program 1 times [2022-11-20 11:51:15,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320627432] [2022-11-20 11:51:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:16,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320627432] [2022-11-20 11:51:16,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320627432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:16,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579624001] [2022-11-20 11:51:16,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:16,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:16,153 INFO L87 Difference]: Start difference. First operand has 5288 states, 3945 states have (on average 1.5275031685678073) internal successors, (6026), 3957 states have internal predecessors, (6026), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:16,881 INFO L93 Difference]: Finished difference Result 10634 states and 17369 transitions. [2022-11-20 11:51:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:51:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:16,966 INFO L225 Difference]: With dead ends: 10634 [2022-11-20 11:51:16,967 INFO L226 Difference]: Without dead ends: 5345 [2022-11-20 11:51:17,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:17,054 INFO L413 NwaCegarLoop]: 8600 mSDtfsCounter, 8332 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8332 SdHoareTripleChecker+Valid, 8953 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:17,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8332 Valid, 8953 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:51:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2022-11-20 11:51:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 5343. [2022-11-20 11:51:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 3995 states have (on average 1.528160200250313) internal successors, (6105), 4003 states have internal predecessors, (6105), 1295 states have call successors, (1295), 53 states have call predecessors, (1295), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-20 11:51:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 8689 transitions. [2022-11-20 11:51:18,604 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 8689 transitions. Word has length 8 [2022-11-20 11:51:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:18,604 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 8689 transitions. [2022-11-20 11:51:18,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 8689 transitions. [2022-11-20 11:51:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:51:18,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:18,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:51:18,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1531959607, now seen corresponding path program 1 times [2022-11-20 11:51:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:18,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997325260] [2022-11-20 11:51:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:18,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:19,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:19,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997325260] [2022-11-20 11:51:19,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997325260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:19,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:19,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802381211] [2022-11-20 11:51:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:19,308 INFO L87 Difference]: Start difference. First operand 5343 states and 8689 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:19,706 INFO L93 Difference]: Finished difference Result 5345 states and 8690 transitions. [2022-11-20 11:51:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:19,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:51:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:19,754 INFO L225 Difference]: With dead ends: 5345 [2022-11-20 11:51:19,754 INFO L226 Difference]: Without dead ends: 5342 [2022-11-20 11:51:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:19,765 INFO L413 NwaCegarLoop]: 8591 mSDtfsCounter, 8586 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8586 SdHoareTripleChecker+Valid, 8591 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:19,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8586 Valid, 8591 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5342 states. [2022-11-20 11:51:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5342 to 5342. [2022-11-20 11:51:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 3995 states have (on average 1.527909887359199) internal successors, (6104), 4002 states have internal predecessors, (6104), 1294 states have call successors, (1294), 53 states have call predecessors, (1294), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-20 11:51:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8687 transitions. [2022-11-20 11:51:20,851 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8687 transitions. Word has length 9 [2022-11-20 11:51:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:20,852 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 8687 transitions. [2022-11-20 11:51:20,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8687 transitions. [2022-11-20 11:51:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:51:20,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:20,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:51:20,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash 243611435, now seen corresponding path program 1 times [2022-11-20 11:51:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660800340] [2022-11-20 11:51:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:21,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660800340] [2022-11-20 11:51:21,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660800340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:21,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:21,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142212225] [2022-11-20 11:51:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:21,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:21,388 INFO L87 Difference]: Start difference. First operand 5342 states and 8687 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:21,769 INFO L93 Difference]: Finished difference Result 5344 states and 8688 transitions. [2022-11-20 11:51:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:51:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:21,823 INFO L225 Difference]: With dead ends: 5344 [2022-11-20 11:51:21,824 INFO L226 Difference]: Without dead ends: 5341 [2022-11-20 11:51:21,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:21,839 INFO L413 NwaCegarLoop]: 8589 mSDtfsCounter, 8583 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8583 SdHoareTripleChecker+Valid, 8589 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:21,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8583 Valid, 8589 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2022-11-20 11:51:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5341. [2022-11-20 11:51:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 3995 states have (on average 1.5276595744680852) internal successors, (6103), 4001 states have internal predecessors, (6103), 1293 states have call successors, (1293), 53 states have call predecessors, (1293), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-20 11:51:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 8685 transitions. [2022-11-20 11:51:22,993 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 8685 transitions. Word has length 10 [2022-11-20 11:51:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:22,993 INFO L495 AbstractCegarLoop]: Abstraction has 5341 states and 8685 transitions. [2022-11-20 11:51:22,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 8685 transitions. [2022-11-20 11:51:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:51:22,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:22,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:51:22,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1040471366, now seen corresponding path program 1 times [2022-11-20 11:51:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:22,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228190221] [2022-11-20 11:51:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:23,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:23,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228190221] [2022-11-20 11:51:23,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228190221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:23,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:23,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033447673] [2022-11-20 11:51:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:23,603 INFO L87 Difference]: Start difference. First operand 5341 states and 8685 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:24,542 INFO L93 Difference]: Finished difference Result 16001 states and 26161 transitions. [2022-11-20 11:51:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:51:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:24,666 INFO L225 Difference]: With dead ends: 16001 [2022-11-20 11:51:24,666 INFO L226 Difference]: Without dead ends: 10659 [2022-11-20 11:51:24,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:24,730 INFO L413 NwaCegarLoop]: 9984 mSDtfsCounter, 8611 mSDsluCounter, 8611 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8611 SdHoareTripleChecker+Valid, 18595 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:24,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8611 Valid, 18595 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:51:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10659 states. [2022-11-20 11:51:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10659 to 10655. [2022-11-20 11:51:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10655 states, 7973 states have (on average 1.5284083782766837) internal successors, (12186), 7983 states have internal predecessors, (12186), 2579 states have call successors, (2579), 104 states have call predecessors, (2579), 102 states have return successors, (2653), 2571 states have call predecessors, (2653), 2573 states have call successors, (2653) [2022-11-20 11:51:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 17418 transitions. [2022-11-20 11:51:26,640 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 17418 transitions. Word has length 11 [2022-11-20 11:51:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 10655 states and 17418 transitions. [2022-11-20 11:51:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 17418 transitions. [2022-11-20 11:51:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:51:26,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:26,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:51:26,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 46739510, now seen corresponding path program 1 times [2022-11-20 11:51:26,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:26,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747838532] [2022-11-20 11:51:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:26,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:51:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:51:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:51:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:51:28,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:28,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747838532] [2022-11-20 11:51:28,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747838532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:28,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:28,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:51:28,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063424383] [2022-11-20 11:51:28,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:28,744 INFO L87 Difference]: Start difference. First operand 10655 states and 17418 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:51:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:37,337 INFO L93 Difference]: Finished difference Result 21599 states and 35529 transitions. [2022-11-20 11:51:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:51:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-11-20 11:51:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:37,433 INFO L225 Difference]: With dead ends: 21599 [2022-11-20 11:51:37,433 INFO L226 Difference]: Without dead ends: 10947 [2022-11-20 11:51:37,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:51:37,534 INFO L413 NwaCegarLoop]: 8362 mSDtfsCounter, 648 mSDsluCounter, 30012 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 1368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 38374 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1368 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:37,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 38374 Invalid, 4332 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1368 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 11:51:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10947 states. [2022-11-20 11:51:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 10803. [2022-11-20 11:51:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10803 states, 8094 states have (on average 1.5271806276254016) internal successors, (12361), 8107 states have internal predecessors, (12361), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2022-11-20 11:51:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10803 states to 10803 states and 17662 transitions. [2022-11-20 11:51:39,388 INFO L78 Accepts]: Start accepts. Automaton has 10803 states and 17662 transitions. Word has length 68 [2022-11-20 11:51:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:39,389 INFO L495 AbstractCegarLoop]: Abstraction has 10803 states and 17662 transitions. [2022-11-20 11:51:39,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:51:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10803 states and 17662 transitions. [2022-11-20 11:51:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 11:51:39,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:39,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:39,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:51:39,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1654506248, now seen corresponding path program 1 times [2022-11-20 11:51:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:39,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618243562] [2022-11-20 11:51:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:51:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 11:51:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:51:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:51:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:51:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618243562] [2022-11-20 11:51:41,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618243562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:41,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:41,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:51:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336688675] [2022-11-20 11:51:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:51:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:51:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:51:41,400 INFO L87 Difference]: Start difference. First operand 10803 states and 17662 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 11:52:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:12,813 INFO L93 Difference]: Finished difference Result 27861 states and 48458 transitions. [2022-11-20 11:52:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:52:12,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-11-20 11:52:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:12,943 INFO L225 Difference]: With dead ends: 27861 [2022-11-20 11:52:12,944 INFO L226 Difference]: Without dead ends: 17061 [2022-11-20 11:52:13,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:52:13,027 INFO L413 NwaCegarLoop]: 7276 mSDtfsCounter, 6448 mSDsluCounter, 32650 mSDsCounter, 0 mSdLazyCounter, 25421 mSolverCounterSat, 3634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8369 SdHoareTripleChecker+Valid, 39926 SdHoareTripleChecker+Invalid, 29055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3634 IncrementalHoareTripleChecker+Valid, 25421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8369 Valid, 39926 Invalid, 29055 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3634 Valid, 25421 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-11-20 11:52:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17061 states. [2022-11-20 11:52:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17061 to 10813. [2022-11-20 11:52:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10813 states, 8102 states have (on average 1.5266600839298938) internal successors, (12369), 8115 states have internal predecessors, (12369), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 111 states have return successors, (2742), 2595 states have call predecessors, (2742), 2593 states have call successors, (2742) [2022-11-20 11:52:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10813 states to 10813 states and 17710 transitions. [2022-11-20 11:52:17,662 INFO L78 Accepts]: Start accepts. Automaton has 10813 states and 17710 transitions. Word has length 71 [2022-11-20 11:52:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:17,665 INFO L495 AbstractCegarLoop]: Abstraction has 10813 states and 17710 transitions. [2022-11-20 11:52:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 11:52:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 10813 states and 17710 transitions. [2022-11-20 11:52:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:52:17,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:17,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:52:17,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1499925281, now seen corresponding path program 1 times [2022-11-20 11:52:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:17,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674834992] [2022-11-20 11:52:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:52:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:52:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:52:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:52:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:52:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:52:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674834992] [2022-11-20 11:52:25,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674834992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:25,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:25,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:52:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121697092] [2022-11-20 11:52:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:25,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:52:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:52:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:52:25,757 INFO L87 Difference]: Start difference. First operand 10813 states and 17710 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:52:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:55,077 INFO L93 Difference]: Finished difference Result 22440 states and 36935 transitions. [2022-11-20 11:52:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:52:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 77 [2022-11-20 11:52:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:55,153 INFO L225 Difference]: With dead ends: 22440 [2022-11-20 11:52:55,153 INFO L226 Difference]: Without dead ends: 11630 [2022-11-20 11:52:55,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:52:55,244 INFO L413 NwaCegarLoop]: 8304 mSDtfsCounter, 2054 mSDsluCounter, 27087 mSDsCounter, 0 mSdLazyCounter, 9329 mSolverCounterSat, 3145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 35391 SdHoareTripleChecker+Invalid, 12474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3145 IncrementalHoareTripleChecker+Valid, 9329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:55,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 35391 Invalid, 12474 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3145 Valid, 9329 Invalid, 0 Unknown, 0 Unchecked, 27.8s Time] [2022-11-20 11:52:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2022-11-20 11:52:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 11253. [2022-11-20 11:52:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11253 states, 8416 states have (on average 1.5240019011406845) internal successors, (12826), 8462 states have internal predecessors, (12826), 2690 states have call successors, (2690), 146 states have call predecessors, (2690), 146 states have return successors, (2861), 2648 states have call predecessors, (2861), 2684 states have call successors, (2861) [2022-11-20 11:52:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11253 states to 11253 states and 18377 transitions. [2022-11-20 11:52:57,377 INFO L78 Accepts]: Start accepts. Automaton has 11253 states and 18377 transitions. Word has length 77 [2022-11-20 11:52:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 11253 states and 18377 transitions. [2022-11-20 11:52:57,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:52:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 11253 states and 18377 transitions. [2022-11-20 11:52:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:52:57,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:57,388 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:57,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:52:57,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1079657251, now seen corresponding path program 1 times [2022-11-20 11:52:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5087045] [2022-11-20 11:52:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:57,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:52:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:52:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:52:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:52:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:52:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:52:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:52:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:52:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:52:58,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5087045] [2022-11-20 11:52:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5087045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:52:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480723514] [2022-11-20 11:52:58,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:58,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:52:58,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:52:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:52:58,350 INFO L87 Difference]: Start difference. First operand 11253 states and 18377 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:53:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:16,643 INFO L93 Difference]: Finished difference Result 16038 states and 26412 transitions. [2022-11-20 11:53:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:53:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-20 11:53:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:16,748 INFO L225 Difference]: With dead ends: 16038 [2022-11-20 11:53:16,749 INFO L226 Difference]: Without dead ends: 16035 [2022-11-20 11:53:16,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:53:16,766 INFO L413 NwaCegarLoop]: 6060 mSDtfsCounter, 6350 mSDsluCounter, 12274 mSDsCounter, 0 mSdLazyCounter, 12267 mSolverCounterSat, 5545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7364 SdHoareTripleChecker+Valid, 18334 SdHoareTripleChecker+Invalid, 17812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5545 IncrementalHoareTripleChecker+Valid, 12267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:16,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7364 Valid, 18334 Invalid, 17812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5545 Valid, 12267 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2022-11-20 11:53:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16035 states. [2022-11-20 11:53:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16035 to 11252. [2022-11-20 11:53:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 8416 states have (on average 1.523764258555133) internal successors, (12824), 8461 states have internal predecessors, (12824), 2689 states have call successors, (2689), 146 states have call predecessors, (2689), 146 states have return successors, (2861), 2648 states have call predecessors, (2861), 2684 states have call successors, (2861) [2022-11-20 11:53:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 18374 transitions. [2022-11-20 11:53:19,222 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 18374 transitions. Word has length 88 [2022-11-20 11:53:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:19,222 INFO L495 AbstractCegarLoop]: Abstraction has 11252 states and 18374 transitions. [2022-11-20 11:53:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:53:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 18374 transitions. [2022-11-20 11:53:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:53:19,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:19,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:19,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:53:19,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2138728231, now seen corresponding path program 1 times [2022-11-20 11:53:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:19,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951766751] [2022-11-20 11:53:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:53:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:53:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:53:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:53:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:53:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:53:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:53:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:39,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951766751] [2022-11-20 11:53:39,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951766751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:39,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:39,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:53:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001872098] [2022-11-20 11:53:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:53:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:53:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:53:39,875 INFO L87 Difference]: Start difference. First operand 11252 states and 18374 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:55:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:09,584 INFO L93 Difference]: Finished difference Result 24066 states and 41433 transitions. [2022-11-20 11:55:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:55:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 79 [2022-11-20 11:55:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:09,698 INFO L225 Difference]: With dead ends: 24066 [2022-11-20 11:55:09,699 INFO L226 Difference]: Without dead ends: 13229 [2022-11-20 11:55:09,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:55:09,814 INFO L413 NwaCegarLoop]: 8071 mSDtfsCounter, 2498 mSDsluCounter, 38452 mSDsCounter, 0 mSdLazyCounter, 23193 mSolverCounterSat, 1851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 46523 SdHoareTripleChecker+Invalid, 25044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 23193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:09,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 46523 Invalid, 25044 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1851 Valid, 23193 Invalid, 0 Unknown, 0 Unchecked, 87.3s Time] [2022-11-20 11:55:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2022-11-20 11:55:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 12338. [2022-11-20 11:55:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12338 states, 9257 states have (on average 1.5246840229015879) internal successors, (14114), 9347 states have internal predecessors, (14114), 2874 states have call successors, (2874), 200 states have call predecessors, (2874), 206 states have return successors, (4746), 2794 states have call predecessors, (4746), 2869 states have call successors, (4746) [2022-11-20 11:55:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12338 states to 12338 states and 21734 transitions. [2022-11-20 11:55:13,699 INFO L78 Accepts]: Start accepts. Automaton has 12338 states and 21734 transitions. Word has length 79 [2022-11-20 11:55:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:13,699 INFO L495 AbstractCegarLoop]: Abstraction has 12338 states and 21734 transitions. [2022-11-20 11:55:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:55:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 12338 states and 21734 transitions. [2022-11-20 11:55:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 11:55:13,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:13,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:55:13,714 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:55:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 298095679, now seen corresponding path program 1 times [2022-11-20 11:55:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415460842] [2022-11-20 11:55:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:55:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:55:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:55:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:55:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:55:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:55:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:55:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:55:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415460842] [2022-11-20 11:55:42,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415460842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:55:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055344765] [2022-11-20 11:55:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:42,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:55:42,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:55:42,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:55:42,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:55:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:44,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 8098 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:55:44,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:44,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:55:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:55:45,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055344765] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:55:45,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:55:45,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16, 5] total 20 [2022-11-20 11:55:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860788238] [2022-11-20 11:55:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:45,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:55:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:55:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:55:45,161 INFO L87 Difference]: Start difference. First operand 12338 states and 21734 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:55:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:46,459 INFO L93 Difference]: Finished difference Result 23216 states and 43058 transitions. [2022-11-20 11:55:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:55:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2022-11-20 11:55:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:46,550 INFO L225 Difference]: With dead ends: 23216 [2022-11-20 11:55:46,550 INFO L226 Difference]: Without dead ends: 11723 [2022-11-20 11:55:46,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:55:46,795 INFO L413 NwaCegarLoop]: 8584 mSDtfsCounter, 36 mSDsluCounter, 17130 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 25714 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:46,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 25714 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:55:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11723 states. [2022-11-20 11:55:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11723 to 11581. [2022-11-20 11:55:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 8658 states have (on average 1.522869022869023) internal successors, (13185), 8716 states have internal predecessors, (13185), 2764 states have call successors, (2764), 161 states have call predecessors, (2764), 158 states have return successors, (2945), 2707 states have call predecessors, (2945), 2759 states have call successors, (2945) [2022-11-20 11:55:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 18894 transitions. [2022-11-20 11:55:48,610 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 18894 transitions. Word has length 80 [2022-11-20 11:55:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:48,612 INFO L495 AbstractCegarLoop]: Abstraction has 11581 states and 18894 transitions. [2022-11-20 11:55:48,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:55:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 18894 transitions. [2022-11-20 11:55:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 11:55:48,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:48,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:48,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:48,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931e951c-e602-498d-8ad5-10494823c9b6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:55:48,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:55:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:48,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1976055041, now seen corresponding path program 1 times [2022-11-20 11:55:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:48,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233545025] [2022-11-20 11:55:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:56:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:56:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:56:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:56:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:56:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:56:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:56:10,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:10,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233545025] [2022-11-20 11:56:10,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233545025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:10,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:10,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:56:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755384830] [2022-11-20 11:56:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:10,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:56:10,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:56:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:56:10,079 INFO L87 Difference]: Start difference. First operand 11581 states and 18894 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:57:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:51,373 INFO L93 Difference]: Finished difference Result 23754 states and 38914 transitions. [2022-11-20 11:57:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:57:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2022-11-20 11:57:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:51,667 INFO L225 Difference]: With dead ends: 23754 [2022-11-20 11:57:51,672 INFO L226 Difference]: Without dead ends: 12915 [2022-11-20 11:57:51,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:57:51,728 INFO L413 NwaCegarLoop]: 8213 mSDtfsCounter, 2797 mSDsluCounter, 41321 mSDsCounter, 0 mSdLazyCounter, 24146 mSolverCounterSat, 1865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 49534 SdHoareTripleChecker+Invalid, 26011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1865 IncrementalHoareTripleChecker+Valid, 24146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:51,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2855 Valid, 49534 Invalid, 26011 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1865 Valid, 24146 Invalid, 0 Unknown, 0 Unchecked, 98.7s Time] [2022-11-20 11:57:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2022-11-20 11:57:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 12136. [2022-11-20 11:57:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12136 states, 9082 states have (on average 1.52279233648976) internal successors, (13830), 9166 states have internal predecessors, (13830), 2860 states have call successors, (2860), 192 states have call predecessors, (2860), 193 states have return successors, (3108), 2781 states have call predecessors, (3108), 2855 states have call successors, (3108) [2022-11-20 11:57:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12136 states to 12136 states and 19798 transitions. [2022-11-20 11:57:53,306 INFO L78 Accepts]: Start accepts. Automaton has 12136 states and 19798 transitions. Word has length 80 [2022-11-20 11:57:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:53,307 INFO L495 AbstractCegarLoop]: Abstraction has 12136 states and 19798 transitions. [2022-11-20 11:57:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:57:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12136 states and 19798 transitions. [2022-11-20 11:57:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:57:53,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:53,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:53,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:57:53,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1583971045, now seen corresponding path program 1 times [2022-11-20 11:57:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:53,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272737932] [2022-11-20 11:57:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:57:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:57:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:57:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:57:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:57:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:55,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272737932] [2022-11-20 11:57:55,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272737932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:55,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:55,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:57:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899679797] [2022-11-20 11:57:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:55,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:55,405 INFO L87 Difference]: Start difference. First operand 12136 states and 19798 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:58:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:02,774 INFO L93 Difference]: Finished difference Result 23567 states and 40514 transitions. [2022-11-20 11:58:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:58:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2022-11-20 11:58:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:02,845 INFO L225 Difference]: With dead ends: 23567 [2022-11-20 11:58:02,845 INFO L226 Difference]: Without dead ends: 12229 [2022-11-20 11:58:02,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:02,962 INFO L413 NwaCegarLoop]: 8386 mSDtfsCounter, 332 mSDsluCounter, 13721 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:02,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 22107 Invalid, 3430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 11:58:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-11-20 11:58:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12140. [2022-11-20 11:58:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 9086 states have (on average 1.5225621835791328) internal successors, (13834), 9170 states have internal predecessors, (13834), 2860 states have call successors, (2860), 192 states have call predecessors, (2860), 193 states have return successors, (3108), 2781 states have call predecessors, (3108), 2855 states have call successors, (3108) [2022-11-20 11:58:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 19802 transitions. [2022-11-20 11:58:04,780 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 19802 transitions. Word has length 82 [2022-11-20 11:58:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:04,780 INFO L495 AbstractCegarLoop]: Abstraction has 12140 states and 19802 transitions. [2022-11-20 11:58:04,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:58:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 19802 transitions. [2022-11-20 11:58:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:58:04,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:04,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:04,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:58:04,792 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -713957014, now seen corresponding path program 1 times [2022-11-20 11:58:04,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709822310] [2022-11-20 11:58:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:04,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:58:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:58:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:58:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:58:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709822310] [2022-11-20 11:58:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709822310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:10,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:58:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395926380] [2022-11-20 11:58:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:58:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:58:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:58:10,759 INFO L87 Difference]: Start difference. First operand 12140 states and 19802 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:58:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:42,499 INFO L93 Difference]: Finished difference Result 25515 states and 41925 transitions. [2022-11-20 11:58:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:58:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 83 [2022-11-20 11:58:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:42,604 INFO L225 Difference]: With dead ends: 25515 [2022-11-20 11:58:42,605 INFO L226 Difference]: Without dead ends: 14253 [2022-11-20 11:58:42,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:58:42,725 INFO L413 NwaCegarLoop]: 8285 mSDtfsCounter, 1581 mSDsluCounter, 43369 mSDsCounter, 0 mSdLazyCounter, 15212 mSolverCounterSat, 1905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 51654 SdHoareTripleChecker+Invalid, 17117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1905 IncrementalHoareTripleChecker+Valid, 15212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:42,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 51654 Invalid, 17117 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1905 Valid, 15212 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time] [2022-11-20 11:58:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2022-11-20 11:58:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 13089. [2022-11-20 11:58:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13089 states, 9747 states have (on average 1.5191340925412948) internal successors, (14807), 9904 states have internal predecessors, (14807), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-20 11:58:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 21283 transitions. [2022-11-20 11:58:44,825 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 21283 transitions. Word has length 83 [2022-11-20 11:58:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:44,826 INFO L495 AbstractCegarLoop]: Abstraction has 13089 states and 21283 transitions. [2022-11-20 11:58:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:58:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 21283 transitions. [2022-11-20 11:58:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:58:44,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:44,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:58:44,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -729318641, now seen corresponding path program 1 times [2022-11-20 11:58:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585721365] [2022-11-20 11:58:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:58:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:58:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:58:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:58:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:58:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585721365] [2022-11-20 11:58:50,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585721365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:50,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:50,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:58:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647957806] [2022-11-20 11:58:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:58:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:58:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:58:50,376 INFO L87 Difference]: Start difference. First operand 13089 states and 21283 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:59:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:15,704 INFO L93 Difference]: Finished difference Result 25741 states and 42295 transitions. [2022-11-20 11:59:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:59:15,705 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 85 [2022-11-20 11:59:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:15,829 INFO L225 Difference]: With dead ends: 25741 [2022-11-20 11:59:15,830 INFO L226 Difference]: Without dead ends: 13774 [2022-11-20 11:59:15,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:59:15,988 INFO L413 NwaCegarLoop]: 8307 mSDtfsCounter, 1630 mSDsluCounter, 25805 mSDsCounter, 0 mSdLazyCounter, 9105 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 34112 SdHoareTripleChecker+Invalid, 10844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 9105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:15,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 34112 Invalid, 10844 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1739 Valid, 9105 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2022-11-20 11:59:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2022-11-20 11:59:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 13103. [2022-11-20 11:59:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 9761 states have (on average 1.518389509271591) internal successors, (14821), 9918 states have internal predecessors, (14821), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-20 11:59:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 21297 transitions. [2022-11-20 11:59:18,283 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 21297 transitions. Word has length 85 [2022-11-20 11:59:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:18,283 INFO L495 AbstractCegarLoop]: Abstraction has 13103 states and 21297 transitions. [2022-11-20 11:59:18,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:59:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 21297 transitions. [2022-11-20 11:59:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:59:18,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:18,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:18,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:59:18,292 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1913406724, now seen corresponding path program 1 times [2022-11-20 11:59:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:18,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972846716] [2022-11-20 11:59:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:59:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:59:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:59:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:59:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:59:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:59:25,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:25,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972846716] [2022-11-20 11:59:25,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972846716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:25,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:25,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:59:25,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246180607] [2022-11-20 11:59:25,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:25,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:59:25,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:25,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:59:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:59:25,381 INFO L87 Difference]: Start difference. First operand 13103 states and 21297 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:59:34,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 11:59:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:57,482 INFO L93 Difference]: Finished difference Result 25875 states and 42433 transitions. [2022-11-20 11:59:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:59:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 87 [2022-11-20 11:59:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:57,590 INFO L225 Difference]: With dead ends: 25875 [2022-11-20 11:59:57,590 INFO L226 Difference]: Without dead ends: 13908 [2022-11-20 11:59:57,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:59:57,733 INFO L413 NwaCegarLoop]: 8285 mSDtfsCounter, 1631 mSDsluCounter, 38325 mSDsCounter, 0 mSdLazyCounter, 13423 mSolverCounterSat, 1903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 46610 SdHoareTripleChecker+Invalid, 15326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 13423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:57,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 46610 Invalid, 15326 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1903 Valid, 13423 Invalid, 0 Unknown, 0 Unchecked, 30.2s Time] [2022-11-20 11:59:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2022-11-20 11:59:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13129. [2022-11-20 11:59:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 9787 states have (on average 1.5178297741902524) internal successors, (14855), 9944 states have internal predecessors, (14855), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-20 11:59:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 21331 transitions. [2022-11-20 11:59:59,851 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 21331 transitions. Word has length 87 [2022-11-20 11:59:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:59,851 INFO L495 AbstractCegarLoop]: Abstraction has 13129 states and 21331 transitions. [2022-11-20 11:59:59,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:59:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 21331 transitions. [2022-11-20 11:59:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:59:59,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:59,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:59:59,861 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 465959433, now seen corresponding path program 1 times [2022-11-20 11:59:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:59,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047001540] [2022-11-20 11:59:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:00:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:00:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:00:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:00:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:00:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:00:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:00:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:33,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047001540] [2022-11-20 12:00:33,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047001540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:33,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:33,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 12:00:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615288584] [2022-11-20 12:00:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:00:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:00:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:00:33,944 INFO L87 Difference]: Start difference. First operand 13129 states and 21331 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)