./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:28:29,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:29,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:29,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:29,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:29,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:29,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:29,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:29,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:29,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:29,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:29,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:29,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:29,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:29,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:29,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:29,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:29,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:29,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:29,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:29,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:29,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:29,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:29,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:29,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:29,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:29,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:29,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:29,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:29,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:29,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:29,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:29,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:29,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:29,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:29,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:29,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:29,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:29,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:29,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:29,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:29,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:28:29,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:29,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:29,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:29,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:29,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:29,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:29,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:29,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:29,391 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:29,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:29,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:29,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:29,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:29,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:29,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:29,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:29,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:29,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:29,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:29,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:29,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:29,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:29,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:29,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:29,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:29,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:29,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:29,398 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:29,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:29,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:29,399 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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-20 09:28:29,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:29,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:29,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:29,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:29,818 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:29,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:28:32,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:33,448 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:33,448 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:28:33,478 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/data/74c7b1abc/32fff056ad6348909e7f43a3431a3205/FLAG8e01dbe46 [2022-11-20 09:28:33,495 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/data/74c7b1abc/32fff056ad6348909e7f43a3431a3205 [2022-11-20 09:28:33,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:33,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:33,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:33,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:33,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:33,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:33" (1/1) ... [2022-11-20 09:28:33,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c781bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:33, skipping insertion in model container [2022-11-20 09:28:33,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:33" (1/1) ... [2022-11-20 09:28:33,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:33,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:34,860 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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-20 09:28:34,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:34,968 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:35,377 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_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-20 09:28:35,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:35,486 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35 WrapperNode [2022-11-20 09:28:35,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:35,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:35,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:35,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:35,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,650 INFO L138 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1831 [2022-11-20 09:28:35,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:35,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:35,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:35,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:35,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,797 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:35,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:35,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:35,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:35,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (1/1) ... [2022-11-20 09:28:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:35,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-20 09:28:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-20 09:28:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 09:28:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 09:28:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-20 09:28:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-20 09:28:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 09:28:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-20 09:28:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-20 09:28:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-20 09:28:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-20 09:28:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-20 09:28:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-20 09:28:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 09:28:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 09:28:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 09:28:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 09:28:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 09:28:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 09:28:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-20 09:28:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-20 09:28:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 09:28:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 09:28:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-20 09:28:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-20 09:28:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-20 09:28:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-20 09:28:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-20 09:28:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-20 09:28:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 09:28:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 09:28:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 09:28:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 09:28:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 09:28:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 09:28:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 09:28:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 09:28:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-20 09:28:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-20 09:28:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 09:28:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-20 09:28:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-20 09:28:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-20 09:28:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-20 09:28:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-20 09:28:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-20 09:28:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:28:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 09:28:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 09:28:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 09:28:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 09:28:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-20 09:28:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-20 09:28:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 09:28:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 09:28:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:28:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:28:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 09:28:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 09:28:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:28:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 09:28:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 09:28:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 09:28:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 09:28:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 09:28:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 09:28:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:28:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:28:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 09:28:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 09:28:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 09:28:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:28:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-20 09:28:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-20 09:28:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-20 09:28:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-20 09:28:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 09:28:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 09:28:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:28:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:28:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 09:28:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 09:28:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 09:28:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 09:28:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 09:28:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 09:28:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 09:28:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 09:28:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-20 09:28:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-20 09:28:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 09:28:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-20 09:28:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-20 09:28:36,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:36,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:37,681 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 09:28:40,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:40,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:40,232 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:28:40,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:40 BoogieIcfgContainer [2022-11-20 09:28:40,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:40,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:40,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:40,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:40,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:33" (1/3) ... [2022-11-20 09:28:40,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd7e172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:40, skipping insertion in model container [2022-11-20 09:28:40,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:35" (2/3) ... [2022-11-20 09:28:40,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd7e172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:40, skipping insertion in model container [2022-11-20 09:28:40,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:40" (3/3) ... [2022-11-20 09:28:40,254 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-20 09:28:40,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:40,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:40,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:40,386 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;@6ceea15a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:40,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:28:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-20 09:28:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 09:28:40,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:40,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:28:40,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2022-11-20 09:28:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:40,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100643066] [2022-11-20 09:28:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:28:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:28:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:28:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:28:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:28:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 09:28:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100643066] [2022-11-20 09:28:41,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100643066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:41,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:41,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772885832] [2022-11-20 09:28:41,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:41,234 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:28:44,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:45,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:47,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:49,696 INFO L93 Difference]: Finished difference Result 1280 states and 1801 transitions. [2022-11-20 09:28:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-20 09:28:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:49,728 INFO L225 Difference]: With dead ends: 1280 [2022-11-20 09:28:49,728 INFO L226 Difference]: Without dead ends: 673 [2022-11-20 09:28:49,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:49,740 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 443 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 268 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:49,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1664 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-20 09:28:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-20 09:28:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 584. [2022-11-20 09:28:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-20 09:28:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2022-11-20 09:28:49,893 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2022-11-20 09:28:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:49,894 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2022-11-20 09:28:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:28:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2022-11-20 09:28:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 09:28:49,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:49,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:28:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:49,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2022-11-20 09:28:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:49,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587985953] [2022-11-20 09:28:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:28:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:28:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:28:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:28:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:28:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 09:28:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587985953] [2022-11-20 09:28:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587985953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:50,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:50,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540794626] [2022-11-20 09:28:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:50,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:50,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:50,338 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:28:56,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:00,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:01,958 INFO L93 Difference]: Finished difference Result 1867 states and 2577 transitions. [2022-11-20 09:29:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2022-11-20 09:29:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,971 INFO L225 Difference]: With dead ends: 1867 [2022-11-20 09:29:01,971 INFO L226 Difference]: Without dead ends: 1301 [2022-11-20 09:29:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:01,976 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1549 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 570 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 2276 Invalid, 1928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [570 Valid, 1357 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-20 09:29:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2022-11-20 09:29:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1127. [2022-11-20 09:29:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3337264150943395) internal successors, (1131), 866 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-20 09:29:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1532 transitions. [2022-11-20 09:29:02,081 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1532 transitions. Word has length 78 [2022-11-20 09:29:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:02,082 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1532 transitions. [2022-11-20 09:29:02,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:29:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1532 transitions. [2022-11-20 09:29:02,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 09:29:02,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:02,088 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:29:02,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2694347, now seen corresponding path program 1 times [2022-11-20 09:29:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635300057] [2022-11-20 09:29:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635300057] [2022-11-20 09:29:02,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635300057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:02,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:02,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:02,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609243090] [2022-11-20 09:29:02,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:02,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:02,520 INFO L87 Difference]: Start difference. First operand 1127 states and 1532 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 09:29:05,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:07,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:09,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:11,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:13,231 INFO L93 Difference]: Finished difference Result 1327 states and 1836 transitions. [2022-11-20 09:29:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:13,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2022-11-20 09:29:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:13,241 INFO L225 Difference]: With dead ends: 1327 [2022-11-20 09:29:13,241 INFO L226 Difference]: Without dead ends: 1314 [2022-11-20 09:29:13,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:13,252 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1183 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:13,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1661 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-20 09:29:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-11-20 09:29:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1127. [2022-11-20 09:29:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3325471698113207) internal successors, (1130), 866 states have internal predecessors, (1130), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-20 09:29:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1531 transitions. [2022-11-20 09:29:13,343 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1531 transitions. Word has length 98 [2022-11-20 09:29:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:13,344 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1531 transitions. [2022-11-20 09:29:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 09:29:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1531 transitions. [2022-11-20 09:29:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 09:29:13,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:13,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:29:13,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 59952649, now seen corresponding path program 1 times [2022-11-20 09:29:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:13,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839833874] [2022-11-20 09:29:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839833874] [2022-11-20 09:29:14,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839833874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:14,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:14,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766721258] [2022-11-20 09:29:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:14,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:14,146 INFO L87 Difference]: Start difference. First operand 1127 states and 1531 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:18,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:20,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:22,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:24,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:26,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:30,324 INFO L93 Difference]: Finished difference Result 3688 states and 5192 transitions. [2022-11-20 09:29:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:30,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2022-11-20 09:29:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:30,348 INFO L225 Difference]: With dead ends: 3688 [2022-11-20 09:29:30,349 INFO L226 Difference]: Without dead ends: 2579 [2022-11-20 09:29:30,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:30,363 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 1674 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 569 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:30,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2421 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1199 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2022-11-20 09:29:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-11-20 09:29:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2305. [2022-11-20 09:29:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1735 states have (on average 1.3302593659942363) internal successors, (2308), 1777 states have internal predecessors, (2308), 406 states have call successors, (406), 150 states have call predecessors, (406), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-20 09:29:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3177 transitions. [2022-11-20 09:29:30,627 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3177 transitions. Word has length 98 [2022-11-20 09:29:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:30,627 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3177 transitions. [2022-11-20 09:29:30,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3177 transitions. [2022-11-20 09:29:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 09:29:30,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:30,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:29:30,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1858300209, now seen corresponding path program 1 times [2022-11-20 09:29:30,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:30,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831749977] [2022-11-20 09:29:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:31,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831749977] [2022-11-20 09:29:31,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831749977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:31,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:31,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730918113] [2022-11-20 09:29:31,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:31,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:31,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:31,283 INFO L87 Difference]: Start difference. First operand 2305 states and 3177 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:35,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:36,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:39,961 INFO L93 Difference]: Finished difference Result 2571 states and 3606 transitions. [2022-11-20 09:29:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-20 09:29:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:39,982 INFO L225 Difference]: With dead ends: 2571 [2022-11-20 09:29:39,983 INFO L226 Difference]: Without dead ends: 2568 [2022-11-20 09:29:39,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:39,986 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1156 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:39,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1596 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-20 09:29:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-20 09:29:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2304. [2022-11-20 09:29:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1735 states have (on average 1.3296829971181556) internal successors, (2307), 1776 states have internal predecessors, (2307), 405 states have call successors, (405), 150 states have call predecessors, (405), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-20 09:29:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3175 transitions. [2022-11-20 09:29:40,223 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3175 transitions. Word has length 99 [2022-11-20 09:29:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:40,224 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3175 transitions. [2022-11-20 09:29:40,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3175 transitions. [2022-11-20 09:29:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 09:29:40,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:40,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:40,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:29:40,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1772504588, now seen corresponding path program 1 times [2022-11-20 09:29:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287120290] [2022-11-20 09:29:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:40,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287120290] [2022-11-20 09:29:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287120290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:40,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:40,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857184519] [2022-11-20 09:29:40,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:40,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:40,609 INFO L87 Difference]: Start difference. First operand 2304 states and 3175 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:42,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:44,881 INFO L93 Difference]: Finished difference Result 2570 states and 3604 transitions. [2022-11-20 09:29:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2022-11-20 09:29:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:44,901 INFO L225 Difference]: With dead ends: 2570 [2022-11-20 09:29:44,901 INFO L226 Difference]: Without dead ends: 2567 [2022-11-20 09:29:44,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:44,904 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1455 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1055 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 09:29:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-20 09:29:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2303. [2022-11-20 09:29:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1735 states have (on average 1.329106628242075) internal successors, (2306), 1775 states have internal predecessors, (2306), 404 states have call successors, (404), 150 states have call predecessors, (404), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-20 09:29:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3173 transitions. [2022-11-20 09:29:45,090 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3173 transitions. Word has length 100 [2022-11-20 09:29:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:45,091 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 3173 transitions. [2022-11-20 09:29:45,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3173 transitions. [2022-11-20 09:29:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 09:29:45,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:45,095 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:29:45,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -887154796, now seen corresponding path program 1 times [2022-11-20 09:29:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375277271] [2022-11-20 09:29:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375277271] [2022-11-20 09:29:45,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375277271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:45,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800262098] [2022-11-20 09:29:45,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:45,448 INFO L87 Difference]: Start difference. First operand 2303 states and 3173 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:50,894 INFO L93 Difference]: Finished difference Result 2569 states and 3602 transitions. [2022-11-20 09:29:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 09:29:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:50,911 INFO L225 Difference]: With dead ends: 2569 [2022-11-20 09:29:50,912 INFO L226 Difference]: Without dead ends: 2566 [2022-11-20 09:29:50,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:50,915 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1150 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:50,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1590 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 09:29:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-11-20 09:29:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2302. [2022-11-20 09:29:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1735 states have (on average 1.3285302593659942) internal successors, (2305), 1774 states have internal predecessors, (2305), 403 states have call successors, (403), 150 states have call predecessors, (403), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-20 09:29:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3171 transitions. [2022-11-20 09:29:51,168 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3171 transitions. Word has length 101 [2022-11-20 09:29:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:51,169 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3171 transitions. [2022-11-20 09:29:51,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3171 transitions. [2022-11-20 09:29:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 09:29:51,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:51,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:29:51,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1732212209, now seen corresponding path program 1 times [2022-11-20 09:29:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:51,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989049263] [2022-11-20 09:29:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:51,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:29:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:51,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989049263] [2022-11-20 09:29:51,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989049263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:51,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:51,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766622042] [2022-11-20 09:29:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:51,545 INFO L87 Difference]: Start difference. First operand 2302 states and 3171 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:53,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:55,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:57,023 INFO L93 Difference]: Finished difference Result 2568 states and 3600 transitions. [2022-11-20 09:29:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:57,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-20 09:29:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:57,040 INFO L225 Difference]: With dead ends: 2568 [2022-11-20 09:29:57,040 INFO L226 Difference]: Without dead ends: 2556 [2022-11-20 09:29:57,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:57,042 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1447 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:57,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1055 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 09:29:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-20 09:29:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2292. [2022-11-20 09:29:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1726 states have (on average 1.3285052143684821) internal successors, (2293), 1764 states have internal predecessors, (2293), 402 states have call successors, (402), 150 states have call predecessors, (402), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-20 09:29:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3158 transitions. [2022-11-20 09:29:57,267 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3158 transitions. Word has length 102 [2022-11-20 09:29:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:57,268 INFO L495 AbstractCegarLoop]: Abstraction has 2292 states and 3158 transitions. [2022-11-20 09:29:57,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3158 transitions. [2022-11-20 09:29:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 09:29:57,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:57,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 09:29:57,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:29:57,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 871426742, now seen corresponding path program 1 times [2022-11-20 09:29:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:57,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192981478] [2022-11-20 09:29:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:29:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:29:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:29:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:29:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:29:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:29:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:29:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:57,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192981478] [2022-11-20 09:29:57,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192981478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:57,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:57,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:29:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761634488] [2022-11-20 09:29:57,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:57,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:29:57,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:29:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:57,670 INFO L87 Difference]: Start difference. First operand 2292 states and 3158 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 09:30:04,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:06,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:12,668 INFO L93 Difference]: Finished difference Result 7214 states and 10130 transitions. [2022-11-20 09:30:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:30:12,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 139 [2022-11-20 09:30:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:12,705 INFO L225 Difference]: With dead ends: 7214 [2022-11-20 09:30:12,705 INFO L226 Difference]: Without dead ends: 4940 [2022-11-20 09:30:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:30:12,715 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1434 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 685 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:12,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 3845 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2270 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-11-20 09:30:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2022-11-20 09:30:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4402. [2022-11-20 09:30:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3292 states have (on average 1.3210814094775212) internal successors, (4349), 3398 states have internal predecessors, (4349), 760 states have call successors, (760), 288 states have call predecessors, (760), 349 states have return successors, (1051), 759 states have call predecessors, (1051), 759 states have call successors, (1051) [2022-11-20 09:30:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6160 transitions. [2022-11-20 09:30:13,257 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6160 transitions. Word has length 139 [2022-11-20 09:30:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6160 transitions. [2022-11-20 09:30:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 09:30:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6160 transitions. [2022-11-20 09:30:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-20 09:30:13,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:13,268 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:13,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:30:13,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:13,270 INFO L85 PathProgramCache]: Analyzing trace with hash 507122438, now seen corresponding path program 1 times [2022-11-20 09:30:13,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:13,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40818494] [2022-11-20 09:30:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:13,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:30:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:30:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:30:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:30:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 09:30:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:30:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 09:30:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 09:30:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 09:30:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 09:30:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 09:30:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 09:30:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 09:30:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 09:30:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 09:30:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 09:30:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:30:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-20 09:30:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-20 09:30:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-20 09:30:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-20 09:30:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-20 09:30:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40818494] [2022-11-20 09:30:13,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40818494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:13,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:13,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:30:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517561835] [2022-11-20 09:30:13,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:30:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:30:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:30:13,937 INFO L87 Difference]: Start difference. First operand 4402 states and 6160 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:18,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:23,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:26,263 INFO L93 Difference]: Finished difference Result 13360 states and 18868 transitions. [2022-11-20 09:30:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:30:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 254 [2022-11-20 09:30:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:26,323 INFO L225 Difference]: With dead ends: 13360 [2022-11-20 09:30:26,323 INFO L226 Difference]: Without dead ends: 8986 [2022-11-20 09:30:26,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:30:26,343 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 2798 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 1311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1311 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:26,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 1787 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1311 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-20 09:30:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2022-11-20 09:30:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 7976. [2022-11-20 09:30:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7976 states, 5976 states have (on average 1.3211178045515395) internal successors, (7895), 6172 states have internal predecessors, (7895), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2022-11-20 09:30:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11146 transitions. [2022-11-20 09:30:27,532 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11146 transitions. Word has length 254 [2022-11-20 09:30:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:27,533 INFO L495 AbstractCegarLoop]: Abstraction has 7976 states and 11146 transitions. [2022-11-20 09:30:27,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11146 transitions. [2022-11-20 09:30:27,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-20 09:30:27,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:27,545 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:27,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:30:27,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash 234758432, now seen corresponding path program 1 times [2022-11-20 09:30:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:27,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675456604] [2022-11-20 09:30:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:30:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:30:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:30:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:30:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:30:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:30:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 09:30:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 09:30:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 09:30:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 09:30:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 09:30:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 09:30:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 09:30:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 09:30:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 09:30:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 09:30:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 09:30:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:30:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-20 09:30:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-20 09:30:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-20 09:30:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 09:30:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:28,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675456604] [2022-11-20 09:30:28,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675456604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:28,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:28,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:30:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217898404] [2022-11-20 09:30:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:30:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:30:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:30:28,232 INFO L87 Difference]: Start difference. First operand 7976 states and 11146 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:34,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:36,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:40,997 INFO L93 Difference]: Finished difference Result 18218 states and 26137 transitions. [2022-11-20 09:30:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:30:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 263 [2022-11-20 09:30:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:41,057 INFO L225 Difference]: With dead ends: 18218 [2022-11-20 09:30:41,058 INFO L226 Difference]: Without dead ends: 10270 [2022-11-20 09:30:41,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:30:41,092 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1247 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:41,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2381 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-20 09:30:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2022-11-20 09:30:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 8056. [2022-11-20 09:30:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8056 states, 6056 states have (on average 1.3248018494055482) internal successors, (8023), 6252 states have internal predecessors, (8023), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2022-11-20 09:30:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8056 states to 8056 states and 11274 transitions. [2022-11-20 09:30:42,092 INFO L78 Accepts]: Start accepts. Automaton has 8056 states and 11274 transitions. Word has length 263 [2022-11-20 09:30:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:42,093 INFO L495 AbstractCegarLoop]: Abstraction has 8056 states and 11274 transitions. [2022-11-20 09:30:42,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8056 states and 11274 transitions. [2022-11-20 09:30:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-20 09:30:42,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:42,106 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:30:42,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1207162728, now seen corresponding path program 1 times [2022-11-20 09:30:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787229370] [2022-11-20 09:30:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:30:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:30:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:30:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:30:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:30:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:30:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:30:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:30:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:30:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:30:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:30:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:30:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:30:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:30:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:30:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:30:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:30:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:30:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:30:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-11-20 09:30:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-20 09:30:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-20 09:30:42,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787229370] [2022-11-20 09:30:42,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787229370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:42,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:42,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:30:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400621061] [2022-11-20 09:30:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:42,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:30:42,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:30:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:30:42,963 INFO L87 Difference]: Start difference. First operand 8056 states and 11274 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:51,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:30:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:57,152 INFO L93 Difference]: Finished difference Result 27286 states and 39018 transitions. [2022-11-20 09:30:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:30:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 270 [2022-11-20 09:30:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:57,262 INFO L225 Difference]: With dead ends: 27286 [2022-11-20 09:30:57,263 INFO L226 Difference]: Without dead ends: 19258 [2022-11-20 09:30:57,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:30:57,299 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 3650 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 1648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1648 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:57,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3746 Valid, 2134 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1648 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-20 09:30:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19258 states. [2022-11-20 09:30:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19258 to 16040. [2022-11-20 09:30:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16040 states, 12052 states have (on average 1.3253401924991703) internal successors, (15973), 12452 states have internal predecessors, (15973), 2680 states have call successors, (2680), 1060 states have call predecessors, (2680), 1307 states have return successors, (3807), 2695 states have call predecessors, (3807), 2679 states have call successors, (3807) [2022-11-20 09:30:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16040 states to 16040 states and 22460 transitions. [2022-11-20 09:30:59,554 INFO L78 Accepts]: Start accepts. Automaton has 16040 states and 22460 transitions. Word has length 270 [2022-11-20 09:30:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:59,556 INFO L495 AbstractCegarLoop]: Abstraction has 16040 states and 22460 transitions. [2022-11-20 09:30:59,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:30:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16040 states and 22460 transitions. [2022-11-20 09:30:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-20 09:30:59,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:59,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:30:59,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1701019158, now seen corresponding path program 1 times [2022-11-20 09:30:59,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:59,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128007610] [2022-11-20 09:30:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:30:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:30:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:31:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:31:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:31:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:31:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:31:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:31:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:31:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:31:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:31:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:31:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:31:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:31:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:31:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:31:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:31:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:31:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:31:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:31:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-11-20 09:31:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-20 09:31:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-20 09:31:00,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:00,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128007610] [2022-11-20 09:31:00,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128007610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:00,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:00,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:31:00,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246978260] [2022-11-20 09:31:00,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:00,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:31:00,292 INFO L87 Difference]: Start difference. First operand 16040 states and 22460 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 09:31:07,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:12,575 INFO L93 Difference]: Finished difference Result 35760 states and 50446 transitions. [2022-11-20 09:31:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:31:12,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 270 [2022-11-20 09:31:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:12,678 INFO L225 Difference]: With dead ends: 35760 [2022-11-20 09:31:12,678 INFO L226 Difference]: Without dead ends: 19748 [2022-11-20 09:31:12,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:31:12,731 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1511 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1809 Invalid, 3181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 2563 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-20 09:31:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2022-11-20 09:31:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 17648. [2022-11-20 09:31:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17648 states, 13400 states have (on average 1.327686567164179) internal successors, (17791), 13812 states have internal predecessors, (17791), 2828 states have call successors, (2828), 1164 states have call predecessors, (2828), 1419 states have return successors, (4003), 2831 states have call predecessors, (4003), 2827 states have call successors, (4003) [2022-11-20 09:31:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17648 states to 17648 states and 24622 transitions. [2022-11-20 09:31:14,515 INFO L78 Accepts]: Start accepts. Automaton has 17648 states and 24622 transitions. Word has length 270 [2022-11-20 09:31:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:14,516 INFO L495 AbstractCegarLoop]: Abstraction has 17648 states and 24622 transitions. [2022-11-20 09:31:14,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 09:31:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17648 states and 24622 transitions. [2022-11-20 09:31:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-20 09:31:14,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:14,532 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:31:14,532 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1669474714, now seen corresponding path program 1 times [2022-11-20 09:31:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:14,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874645817] [2022-11-20 09:31:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:14,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:31:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:31:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:31:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:31:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:31:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:31:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:31:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:31:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:31:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:31:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:31:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:31:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:31:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:31:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:31:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:31:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:31:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:31:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:31:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:31:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-20 09:31:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-20 09:31:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 09:31:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:15,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874645817] [2022-11-20 09:31:15,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874645817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:15,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:15,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:31:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12692888] [2022-11-20 09:31:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:31:15,186 INFO L87 Difference]: Start difference. First operand 17648 states and 24622 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:31:22,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:31:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:30,718 INFO L93 Difference]: Finished difference Result 45736 states and 64266 transitions. [2022-11-20 09:31:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:31:30,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 284 [2022-11-20 09:31:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:30,866 INFO L225 Difference]: With dead ends: 45736 [2022-11-20 09:31:30,866 INFO L226 Difference]: Without dead ends: 28116 [2022-11-20 09:31:30,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:31:30,924 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2582 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:30,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2649 Valid, 1934 Invalid, 4222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-11-20 09:31:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28116 states. [2022-11-20 09:31:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28116 to 24828. [2022-11-20 09:31:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24828 states, 18928 states have (on average 1.3257079459002536) internal successors, (25093), 19492 states have internal predecessors, (25093), 3864 states have call successors, (3864), 1692 states have call predecessors, (3864), 2035 states have return successors, (5563), 3859 states have call predecessors, (5563), 3863 states have call successors, (5563) [2022-11-20 09:31:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24828 states to 24828 states and 34520 transitions. [2022-11-20 09:31:33,929 INFO L78 Accepts]: Start accepts. Automaton has 24828 states and 34520 transitions. Word has length 284 [2022-11-20 09:31:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:33,930 INFO L495 AbstractCegarLoop]: Abstraction has 24828 states and 34520 transitions. [2022-11-20 09:31:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:31:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24828 states and 34520 transitions. [2022-11-20 09:31:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-20 09:31:33,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:33,951 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:33,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:31:33,952 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -575185571, now seen corresponding path program 1 times [2022-11-20 09:31:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467205180] [2022-11-20 09:31:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:31:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:31:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:31:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:31:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:31:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:31:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:31:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:31:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:31:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:31:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:31:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:31:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:31:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:31:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:31:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:31:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:31:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:31:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:31:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:31:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:31:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:31:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 09:31:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-20 09:31:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-20 09:31:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:35,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467205180] [2022-11-20 09:31:35,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467205180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:35,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504955633] [2022-11-20 09:31:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:35,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:35,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:35,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:35,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:31:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 2583 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:31:36,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 09:31:37,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504955633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-11-20 09:31:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522858473] [2022-11-20 09:31:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:31:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:31:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:37,128 INFO L87 Difference]: Start difference. First operand 24828 states and 34520 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:31:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:46,901 INFO L93 Difference]: Finished difference Result 99227 states and 137979 transitions. [2022-11-20 09:31:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 307 [2022-11-20 09:31:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:47,644 INFO L225 Difference]: With dead ends: 99227 [2022-11-20 09:31:47,644 INFO L226 Difference]: Without dead ends: 99219 [2022-11-20 09:31:47,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:47,696 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 3207 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3207 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:47,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3207 Valid, 3333 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 09:31:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99219 states. [2022-11-20 09:31:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99219 to 86764. [2022-11-20 09:31:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86764 states, 66144 states have (on average 1.3257891872278664) internal successors, (87693), 68148 states have internal predecessors, (87693), 13504 states have call successors, (13504), 5912 states have call predecessors, (13504), 7115 states have return successors, (19453), 13459 states have call predecessors, (19453), 13503 states have call successors, (19453) [2022-11-20 09:31:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86764 states to 86764 states and 120650 transitions. [2022-11-20 09:31:57,806 INFO L78 Accepts]: Start accepts. Automaton has 86764 states and 120650 transitions. Word has length 307 [2022-11-20 09:31:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:57,808 INFO L495 AbstractCegarLoop]: Abstraction has 86764 states and 120650 transitions. [2022-11-20 09:31:57,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 09:31:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 86764 states and 120650 transitions. [2022-11-20 09:31:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-20 09:31:57,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:57,898 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:57,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:31:58,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:58,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1549136553, now seen corresponding path program 1 times [2022-11-20 09:31:58,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:58,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907926588] [2022-11-20 09:31:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:58,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:31:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:31:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:31:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:31:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:31:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:31:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 09:31:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 09:31:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 09:31:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:31:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:31:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 09:31:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 09:31:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-20 09:31:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-20 09:31:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-20 09:31:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-20 09:31:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-20 09:31:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-20 09:31:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:31:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-20 09:31:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-20 09:31:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-11-20 09:31:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-20 09:31:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-20 09:31:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-11-20 09:31:58,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:58,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907926588] [2022-11-20 09:31:58,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907926588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:58,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:58,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:31:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366218967] [2022-11-20 09:31:58,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:58,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:31:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:31:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:31:58,842 INFO L87 Difference]: Start difference. First operand 86764 states and 120650 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:32:05,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:12,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:13,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:19,282 INFO L93 Difference]: Finished difference Result 133489 states and 186155 transitions. [2022-11-20 09:32:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:32:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 321 [2022-11-20 09:32:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:19,522 INFO L225 Difference]: With dead ends: 133489 [2022-11-20 09:32:19,522 INFO L226 Difference]: Without dead ends: 46753 [2022-11-20 09:32:19,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:32:19,734 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2663 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 1453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1453 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:19,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2753 Valid, 1552 Invalid, 4289 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1453 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-11-20 09:32:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46753 states. [2022-11-20 09:32:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46753 to 26630. [2022-11-20 09:32:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26630 states, 20521 states have (on average 1.324643048584377) internal successors, (27183), 21081 states have internal predecessors, (27183), 3980 states have call successors, (3980), 1781 states have call predecessors, (3980), 2128 states have return successors, (5671), 3987 states have call predecessors, (5671), 3979 states have call successors, (5671) [2022-11-20 09:32:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26630 states to 26630 states and 36834 transitions. [2022-11-20 09:32:23,203 INFO L78 Accepts]: Start accepts. Automaton has 26630 states and 36834 transitions. Word has length 321 [2022-11-20 09:32:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:23,203 INFO L495 AbstractCegarLoop]: Abstraction has 26630 states and 36834 transitions. [2022-11-20 09:32:23,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:32:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 26630 states and 36834 transitions. [2022-11-20 09:32:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 09:32:23,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:23,227 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:23,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:32:23,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:23,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2025296956, now seen corresponding path program 1 times [2022-11-20 09:32:23,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:23,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993118607] [2022-11-20 09:32:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:32:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:32:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:32:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:32:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:32:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:32:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:32:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:32:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:32:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:32:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:32:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:32:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:32:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:32:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:32:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:32:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:32:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:32:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:32:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:32:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:32:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:32:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 09:32:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-20 09:32:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-20 09:32:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-20 09:32:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:24,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993118607] [2022-11-20 09:32:24,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993118607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:24,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:24,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:32:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017463678] [2022-11-20 09:32:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:24,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:24,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:24,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:24,190 INFO L87 Difference]: Start difference. First operand 26630 states and 36834 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:32:33,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:40,638 INFO L93 Difference]: Finished difference Result 56410 states and 78519 transitions. [2022-11-20 09:32:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:32:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 327 [2022-11-20 09:32:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:40,776 INFO L225 Difference]: With dead ends: 56410 [2022-11-20 09:32:40,776 INFO L226 Difference]: Without dead ends: 26641 [2022-11-20 09:32:40,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:32:40,969 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 2039 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 1103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 5130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1103 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:40,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2188 Invalid, 5130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1103 Valid, 4026 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2022-11-20 09:32:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-11-20 09:32:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 23848. [2022-11-20 09:32:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23848 states, 18372 states have (on average 1.3201066840844764) internal successors, (24253), 18873 states have internal predecessors, (24253), 3575 states have call successors, (3575), 1593 states have call predecessors, (3575), 1900 states have return successors, (5071), 3575 states have call predecessors, (5071), 3574 states have call successors, (5071) [2022-11-20 09:32:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23848 states to 23848 states and 32899 transitions. [2022-11-20 09:32:43,815 INFO L78 Accepts]: Start accepts. Automaton has 23848 states and 32899 transitions. Word has length 327 [2022-11-20 09:32:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:43,816 INFO L495 AbstractCegarLoop]: Abstraction has 23848 states and 32899 transitions. [2022-11-20 09:32:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:32:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23848 states and 32899 transitions. [2022-11-20 09:32:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 09:32:43,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:43,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:43,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:32:43,842 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1153702214, now seen corresponding path program 1 times [2022-11-20 09:32:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036359526] [2022-11-20 09:32:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:32:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:32:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:32:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:32:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:32:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:32:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:32:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:32:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:32:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:32:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:32:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:32:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:32:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:32:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:32:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:32:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:32:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:32:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:32:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:32:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:32:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 09:32:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-20 09:32:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-20 09:32:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:32:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-20 09:32:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:44,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036359526] [2022-11-20 09:32:44,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036359526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:44,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:44,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:32:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586597944] [2022-11-20 09:32:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:44,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:44,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:44,494 INFO L87 Difference]: Start difference. First operand 23848 states and 32899 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:32:52,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:54,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:59,374 INFO L93 Difference]: Finished difference Result 35439 states and 49106 transitions. [2022-11-20 09:32:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:32:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 327 [2022-11-20 09:32:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:59,405 INFO L225 Difference]: With dead ends: 35439 [2022-11-20 09:32:59,406 INFO L226 Difference]: Without dead ends: 11636 [2022-11-20 09:32:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:32:59,444 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1092 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 548 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:59,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1734 Invalid, 3409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2860 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2022-11-20 09:32:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2022-11-20 09:33:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 10435. [2022-11-20 09:33:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 8039 states have (on average 1.3213086204751834) internal successors, (10622), 8260 states have internal predecessors, (10622), 1568 states have call successors, (1568), 694 states have call predecessors, (1568), 827 states have return successors, (2218), 1564 states have call predecessors, (2218), 1567 states have call successors, (2218) [2022-11-20 09:33:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 14408 transitions. [2022-11-20 09:33:00,649 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 14408 transitions. Word has length 327 [2022-11-20 09:33:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:00,650 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 14408 transitions. [2022-11-20 09:33:00,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:33:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 14408 transitions. [2022-11-20 09:33:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-20 09:33:00,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:00,659 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:33:00,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1859480282, now seen corresponding path program 1 times [2022-11-20 09:33:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:00,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647421661] [2022-11-20 09:33:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:33:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:33:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:33:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:33:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:33:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:33:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:33:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:33:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:33:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:33:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:33:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:33:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:33:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:33:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:33:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:33:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:33:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:33:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:33:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:33:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:33:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:33:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 09:33:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-20 09:33:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:33:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-11-20 09:33:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-20 09:33:01,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647421661] [2022-11-20 09:33:01,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647421661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:01,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:01,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:33:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956501198] [2022-11-20 09:33:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:01,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:33:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:33:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:33:01,423 INFO L87 Difference]: Start difference. First operand 10435 states and 14408 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:33:07,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:09,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:17,191 INFO L93 Difference]: Finished difference Result 22086 states and 30680 transitions. [2022-11-20 09:33:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:33:17,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 335 [2022-11-20 09:33:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:17,231 INFO L225 Difference]: With dead ends: 22086 [2022-11-20 09:33:17,231 INFO L226 Difference]: Without dead ends: 11720 [2022-11-20 09:33:17,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:33:17,248 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2512 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 1375 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 4647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1375 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:17,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 1532 Invalid, 4647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1375 Valid, 3271 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-11-20 09:33:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11720 states. [2022-11-20 09:33:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11720 to 10435. [2022-11-20 09:33:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 8039 states have (on average 1.313098644109964) internal successors, (10556), 8260 states have internal predecessors, (10556), 1568 states have call successors, (1568), 694 states have call predecessors, (1568), 827 states have return successors, (2218), 1564 states have call predecessors, (2218), 1567 states have call successors, (2218) [2022-11-20 09:33:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 14342 transitions. [2022-11-20 09:33:18,408 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 14342 transitions. Word has length 335 [2022-11-20 09:33:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:18,409 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 14342 transitions. [2022-11-20 09:33:18,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 09:33:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 14342 transitions. [2022-11-20 09:33:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-20 09:33:18,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:18,423 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:18,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:33:18,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash -463508477, now seen corresponding path program 1 times [2022-11-20 09:33:18,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:18,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058112282] [2022-11-20 09:33:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:33:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:33:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:33:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:33:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:33:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:33:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:33:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:33:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:33:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:33:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:33:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:33:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:33:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:33:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:33:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:33:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:33:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:33:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:33:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:33:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:33:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:33:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 09:33:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:33:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 09:33:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:33:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 09:33:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-11-20 09:33:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 09:33:20,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:20,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058112282] [2022-11-20 09:33:20,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058112282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:20,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:20,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 09:33:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673936192] [2022-11-20 09:33:20,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:20,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:33:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:33:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:20,111 INFO L87 Difference]: Start difference. First operand 10435 states and 14342 transitions. Second operand has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 09:33:27,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:29,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:31,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:32,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:33,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:35,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:42,748 INFO L93 Difference]: Finished difference Result 22209 states and 30800 transitions. [2022-11-20 09:33:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:33:42,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 356 [2022-11-20 09:33:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:42,803 INFO L225 Difference]: With dead ends: 22209 [2022-11-20 09:33:42,803 INFO L226 Difference]: Without dead ends: 11843 [2022-11-20 09:33:42,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:33:42,822 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1414 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 6224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:42,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2849 Invalid, 6224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [716 Valid, 5508 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2022-11-20 09:33:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2022-11-20 09:33:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 10426. [2022-11-20 09:33:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10426 states, 8030 states have (on average 1.3112079701120798) internal successors, (10529), 8251 states have internal predecessors, (10529), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 818 states have return successors, (2173), 1564 states have call predecessors, (2173), 1576 states have call successors, (2173) [2022-11-20 09:33:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10426 states to 10426 states and 14279 transitions. [2022-11-20 09:33:43,992 INFO L78 Accepts]: Start accepts. Automaton has 10426 states and 14279 transitions. Word has length 356 [2022-11-20 09:33:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:43,993 INFO L495 AbstractCegarLoop]: Abstraction has 10426 states and 14279 transitions. [2022-11-20 09:33:43,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 09:33:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 10426 states and 14279 transitions. [2022-11-20 09:33:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-20 09:33:44,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:44,014 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:33:44,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash -971119431, now seen corresponding path program 1 times [2022-11-20 09:33:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:44,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789364608] [2022-11-20 09:33:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:44,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:33:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:33:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:33:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:33:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:33:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:33:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:33:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:33:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:33:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:33:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:33:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:33:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:33:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:33:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:33:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:33:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:33:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:33:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:33:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:33:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:33:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:33:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 09:33:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:33:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 09:33:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 09:33:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 09:33:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-11-20 09:33:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 09:33:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:45,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789364608] [2022-11-20 09:33:45,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789364608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:45,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520431083] [2022-11-20 09:33:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:45,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:45,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:45,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:33:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:47,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:33:47,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-20 09:33:47,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:33:47,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520431083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:47,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:33:47,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-20 09:33:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740662293] [2022-11-20 09:33:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:33:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:33:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:47,512 INFO L87 Difference]: Start difference. First operand 10426 states and 14279 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 09:33:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:51,038 INFO L93 Difference]: Finished difference Result 23911 states and 33228 transitions. [2022-11-20 09:33:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:33:51,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 357 [2022-11-20 09:33:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:51,104 INFO L225 Difference]: With dead ends: 23911 [2022-11-20 09:33:51,105 INFO L226 Difference]: Without dead ends: 13554 [2022-11-20 09:33:51,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:33:51,134 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 975 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:51,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2529 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:33:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13554 states. [2022-11-20 09:33:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13554 to 10450. [2022-11-20 09:33:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10450 states, 8054 states have (on average 1.3102806059101069) internal successors, (10553), 8275 states have internal predecessors, (10553), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 818 states have return successors, (2173), 1564 states have call predecessors, (2173), 1576 states have call successors, (2173) [2022-11-20 09:33:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10450 states to 10450 states and 14303 transitions. [2022-11-20 09:33:52,549 INFO L78 Accepts]: Start accepts. Automaton has 10450 states and 14303 transitions. Word has length 357 [2022-11-20 09:33:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:52,550 INFO L495 AbstractCegarLoop]: Abstraction has 10450 states and 14303 transitions. [2022-11-20 09:33:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 09:33:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10450 states and 14303 transitions. [2022-11-20 09:33:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-20 09:33:52,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:52,572 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:52,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:52,785 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:52,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:52,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1311137554, now seen corresponding path program 1 times [2022-11-20 09:33:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240544739] [2022-11-20 09:33:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:33:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:33:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:33:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:33:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:33:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:33:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:33:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 09:33:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:33:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 09:33:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:33:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 09:33:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 09:33:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 09:33:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:33:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 09:33:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:33:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:33:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 09:33:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 09:33:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 09:33:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 09:33:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 09:33:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:33:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 09:33:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:33:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 09:33:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:33:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-20 09:33:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-20 09:33:54,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:54,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240544739] [2022-11-20 09:33:54,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240544739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031089390] [2022-11-20 09:33:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:54,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:54,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:54,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f65c7c9-91ba-4396-8e5c-137f4b288cfe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:33:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:56,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:56,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-20 09:33:56,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:33:56,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031089390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:56,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:33:56,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 13 [2022-11-20 09:33:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362576606] [2022-11-20 09:33:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:56,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:33:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:33:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:33:56,108 INFO L87 Difference]: Start difference. First operand 10450 states and 14303 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 09:33:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:58,024 INFO L93 Difference]: Finished difference Result 20923 states and 28726 transitions. [2022-11-20 09:33:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:33:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 361 [2022-11-20 09:33:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:58,073 INFO L225 Difference]: With dead ends: 20923 [2022-11-20 09:33:58,073 INFO L226 Difference]: Without dead ends: 10502 [2022-11-20 09:33:58,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 439 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:33:58,106 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 0 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3095 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:33:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states.