./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/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_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/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_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- 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 10:44:44,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:44:44,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:44:44,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:44:44,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:44:44,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:44:44,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:44:44,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:44:44,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:44:44,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:44:44,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:44:44,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:44:44,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:44:44,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:44:44,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:44:44,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:44:44,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:44:44,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:44:44,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:44:44,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:44:44,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:44:44,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:44:44,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:44:45,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:44:45,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:44:45,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:44:45,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:44:45,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:44:45,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:44:45,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:44:45,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:44:45,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:44:45,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:44:45,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:44:45,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:44:45,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:44:45,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:44:45,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:44:45,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:44:45,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:44:45,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:44:45,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:44:45,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:44:45,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:44:45,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:44:45,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:44:45,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:44:45,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:44:45,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:44:45,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:44:45,070 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:44:45,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:44:45,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:44:45,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:44:45,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:44:45,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:44:45,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:44:45,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:44:45,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:44:45,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:44:45,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:44:45,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:44:45,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:44:45,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:45,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:44:45,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:44:45,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:44:45,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:44:45,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:44:45,076 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:44:45,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:44:45,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:44:45,077 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_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2022-11-20 10:44:45,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:44:45,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:44:45,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:44:45,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:44:45,410 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:44:45,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-11-20 10:44:48,367 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:44:49,024 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:44:49,025 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-11-20 10:44:49,070 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/data/e76907bed/8748c6ec405c42e5890deeecdfa794a5/FLAGbe3020341 [2022-11-20 10:44:49,092 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/data/e76907bed/8748c6ec405c42e5890deeecdfa794a5 [2022-11-20 10:44:49,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:44:49,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:44:49,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:49,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:44:49,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:44:49,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:49" (1/1) ... [2022-11-20 10:44:49,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a7cd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:49, skipping insertion in model container [2022-11-20 10:44:49,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:49" (1/1) ... [2022-11-20 10:44:49,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:44:49,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:44:51,601 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_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-11-20 10:44:51,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:51,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:44:52,181 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_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-11-20 10:44:52,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:52,272 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:44:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52 WrapperNode [2022-11-20 10:44:52,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:52,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:52,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:44:52,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:44:52,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,704 INFO L138 Inliner]: procedures = 274, calls = 5828, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6435 [2022-11-20 10:44:52,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:52,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:44:52,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:44:52,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:44:52,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,971 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:52,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:53,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:44:53,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:44:53,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:44:53,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:44:53,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (1/1) ... [2022-11-20 10:44:53,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:53,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:44:53,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:44:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2022-11-20 10:44:53,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2022-11-20 10:44:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2022-11-20 10:44:53,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2022-11-20 10:44:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2022-11-20 10:44:53,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2022-11-20 10:44:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:44:53,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:44:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2022-11-20 10:44:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2022-11-20 10:44:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:44:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:44:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-20 10:44:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-20 10:44:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 10:44:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 10:44:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2022-11-20 10:44:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2022-11-20 10:44:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:44:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:44:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-20 10:44:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-20 10:44:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2022-11-20 10:44:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2022-11-20 10:44:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2022-11-20 10:44:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2022-11-20 10:44:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 10:44:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 10:44:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:44:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:44:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2022-11-20 10:44:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2022-11-20 10:44:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:44:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:44:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-20 10:44:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-20 10:44:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2022-11-20 10:44:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2022-11-20 10:44:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2022-11-20 10:44:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2022-11-20 10:44:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2022-11-20 10:44:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2022-11-20 10:44:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2022-11-20 10:44:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2022-11-20 10:44:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-20 10:44:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-20 10:44:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:44:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:44:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:44:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2022-11-20 10:44:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2022-11-20 10:44:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:44:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 10:44:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 10:44:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:44:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:44:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2022-11-20 10:44:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2022-11-20 10:44:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:44:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:44:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:44:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:44:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2022-11-20 10:44:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2022-11-20 10:44:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2022-11-20 10:44:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2022-11-20 10:44:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 10:44:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 10:44:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 10:44:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 10:44:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2022-11-20 10:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2022-11-20 10:44:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 10:44:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 10:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2022-11-20 10:44:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2022-11-20 10:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 10:44:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 10:44:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2022-11-20 10:44:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2022-11-20 10:44:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2022-11-20 10:44:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2022-11-20 10:44:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2022-11-20 10:44:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2022-11-20 10:44:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2022-11-20 10:44:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2022-11-20 10:44:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 10:44:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 10:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2022-11-20 10:44:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2022-11-20 10:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 10:44:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 10:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2022-11-20 10:44:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2022-11-20 10:44:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2022-11-20 10:44:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2022-11-20 10:44:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2022-11-20 10:44:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2022-11-20 10:44:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2022-11-20 10:44:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2022-11-20 10:44:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2022-11-20 10:44:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2022-11-20 10:44:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 10:44:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 10:44:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:44:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:44:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2022-11-20 10:44:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2022-11-20 10:44:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 10:44:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 10:44:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:44:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:44:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:44:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 10:44:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 10:44:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:44:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-20 10:44:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 10:44:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 10:44:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-20 10:44:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-20 10:44:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:44:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2022-11-20 10:44:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2022-11-20 10:44:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2022-11-20 10:44:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2022-11-20 10:44:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:44:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:44:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:44:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2022-11-20 10:44:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2022-11-20 10:44:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2022-11-20 10:44:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2022-11-20 10:44:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-20 10:44:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-20 10:44:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2022-11-20 10:44:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2022-11-20 10:44:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2022-11-20 10:44:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2022-11-20 10:44:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2022-11-20 10:44:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2022-11-20 10:44:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2022-11-20 10:44:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2022-11-20 10:44:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2022-11-20 10:44:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2022-11-20 10:44:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2022-11-20 10:44:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2022-11-20 10:44:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 10:44:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 10:44:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2022-11-20 10:44:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2022-11-20 10:44:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2022-11-20 10:44:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2022-11-20 10:44:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:44:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2022-11-20 10:44:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2022-11-20 10:44:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:44:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:44:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2022-11-20 10:44:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2022-11-20 10:44:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2022-11-20 10:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2022-11-20 10:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2022-11-20 10:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2022-11-20 10:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 10:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 10:44:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2022-11-20 10:44:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2022-11-20 10:44:54,023 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:44:54,027 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:44:55,759 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:45:06,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:45:06,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:45:06,232 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:45:06,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:06 BoogieIcfgContainer [2022-11-20 10:45:06,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:45:06,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:45:06,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:45:06,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:45:06,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:49" (1/3) ... [2022-11-20 10:45:06,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172242ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:06, skipping insertion in model container [2022-11-20 10:45:06,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:52" (2/3) ... [2022-11-20 10:45:06,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172242ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:06, skipping insertion in model container [2022-11-20 10:45:06,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:06" (3/3) ... [2022-11-20 10:45:06,249 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-11-20 10:45:06,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:45:06,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:45:06,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:45:06,381 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;@5d8bc51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:45:06,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:45:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 1461 states, 1029 states have (on average 1.3343051506316812) internal successors, (1373), 1047 states have internal predecessors, (1373), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) [2022-11-20 10:45:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 10:45:06,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:06,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:06,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1641041909, now seen corresponding path program 1 times [2022-11-20 10:45:06,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940427935] [2022-11-20 10:45:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:06,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:45:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:45:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:45:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:45:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 10:45:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940427935] [2022-11-20 10:45:07,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940427935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:07,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:07,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:45:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885445151] [2022-11-20 10:45:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:07,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:07,736 INFO L87 Difference]: Start difference. First operand has 1461 states, 1029 states have (on average 1.3343051506316812) internal successors, (1373), 1047 states have internal predecessors, (1373), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:13,930 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 10:45:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:19,122 INFO L93 Difference]: Finished difference Result 4015 states and 5752 transitions. [2022-11-20 10:45:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:45:19,125 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), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-20 10:45:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:19,169 INFO L225 Difference]: With dead ends: 4015 [2022-11-20 10:45:19,169 INFO L226 Difference]: Without dead ends: 2531 [2022-11-20 10:45:19,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 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 10:45:19,189 INFO L413 NwaCegarLoop]: 2138 mSDtfsCounter, 1989 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 1898 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1898 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:19,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2193 Valid, 4846 Invalid, 3446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1898 Valid, 1547 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-20 10:45:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-11-20 10:45:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2467. [2022-11-20 10:45:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1728 states have (on average 1.3125) internal successors, (2268), 1749 states have internal predecessors, (2268), 601 states have call successors, (601), 138 states have call predecessors, (601), 137 states have return successors, (600), 599 states have call predecessors, (600), 600 states have call successors, (600) [2022-11-20 10:45:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3469 transitions. [2022-11-20 10:45:19,488 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3469 transitions. Word has length 72 [2022-11-20 10:45:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:19,489 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 3469 transitions. [2022-11-20 10:45:19,489 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), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3469 transitions. [2022-11-20 10:45:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-20 10:45:19,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:19,498 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:45:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:45:19,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -712400128, now seen corresponding path program 1 times [2022-11-20 10:45:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709296176] [2022-11-20 10:45:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:45:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:45:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:45:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:45:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:45:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:45:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-20 10:45:20,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:20,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709296176] [2022-11-20 10:45:20,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709296176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:20,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:20,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:45:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047757363] [2022-11-20 10:45:20,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:20,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:20,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:20,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:20,551 INFO L87 Difference]: Start difference. First operand 2467 states and 3469 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:45:27,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:45:29,589 WARN L539 Checker$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 10:45:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:43,208 INFO L93 Difference]: Finished difference Result 4525 states and 6409 transitions. [2022-11-20 10:45:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:45:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 152 [2022-11-20 10:45:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:43,235 INFO L225 Difference]: With dead ends: 4525 [2022-11-20 10:45:43,235 INFO L226 Difference]: Without dead ends: 4522 [2022-11-20 10:45:43,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 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 10:45:43,239 INFO L413 NwaCegarLoop]: 2237 mSDtfsCounter, 1732 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 1209 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 7127 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:43,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 7127 Invalid, 4422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1209 Valid, 3211 Invalid, 2 Unknown, 0 Unchecked, 22.2s Time] [2022-11-20 10:45:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-11-20 10:45:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4378. [2022-11-20 10:45:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 3067 states have (on average 1.3107270948809913) internal successors, (4020), 3117 states have internal predecessors, (4020), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1078), 1044 states have call predecessors, (1078), 1059 states have call successors, (1078) [2022-11-20 10:45:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6158 transitions. [2022-11-20 10:45:43,480 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6158 transitions. Word has length 152 [2022-11-20 10:45:43,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:43,483 INFO L495 AbstractCegarLoop]: Abstraction has 4378 states and 6158 transitions. [2022-11-20 10:45:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:45:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6158 transitions. [2022-11-20 10:45:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 10:45:43,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:43,491 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:45:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:45:43,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1307808889, now seen corresponding path program 1 times [2022-11-20 10:45:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:43,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575359136] [2022-11-20 10:45:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:45:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:45:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:45:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:45:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:45:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:45:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:45:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:45:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:45:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:45:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 10:45:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 10:45:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 10:45:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 10:45:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575359136] [2022-11-20 10:45:44,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575359136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:44,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:44,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:44,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120592638] [2022-11-20 10:45:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:44,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:44,423 INFO L87 Difference]: Start difference. First operand 4378 states and 6158 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:45:52,859 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 10:46:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:07,433 INFO L93 Difference]: Finished difference Result 8923 states and 12597 transitions. [2022-11-20 10:46:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:46:07,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2022-11-20 10:46:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:07,460 INFO L225 Difference]: With dead ends: 8923 [2022-11-20 10:46:07,460 INFO L226 Difference]: Without dead ends: 4549 [2022-11-20 10:46:07,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:46:07,478 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1533 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 6731 mSolverCounterSat, 904 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 7636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 6731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:07,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 2584 Invalid, 7636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [904 Valid, 6731 Invalid, 1 Unknown, 0 Unchecked, 22.5s Time] [2022-11-20 10:46:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2022-11-20 10:46:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4440. [2022-11-20 10:46:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 3107 states have (on average 1.309301577084004) internal successors, (4068), 3159 states have internal predecessors, (4068), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2022-11-20 10:46:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6249 transitions. [2022-11-20 10:46:07,739 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6249 transitions. Word has length 194 [2022-11-20 10:46:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:07,740 INFO L495 AbstractCegarLoop]: Abstraction has 4440 states and 6249 transitions. [2022-11-20 10:46:07,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:46:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6249 transitions. [2022-11-20 10:46:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 10:46:07,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:07,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:46:07,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:46:07,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 620463813, now seen corresponding path program 1 times [2022-11-20 10:46:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:07,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82839292] [2022-11-20 10:46:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:46:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:46:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:46:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:46:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:46:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:46:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:46:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:46:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 10:46:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 10:46:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 10:46:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 10:46:08,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:08,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82839292] [2022-11-20 10:46:08,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82839292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:08,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:08,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825984416] [2022-11-20 10:46:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:08,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:08,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:08,475 INFO L87 Difference]: Start difference. First operand 4440 states and 6249 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:46:16,720 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 10:46:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:33,283 INFO L93 Difference]: Finished difference Result 8987 states and 12688 transitions. [2022-11-20 10:46:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:46:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2022-11-20 10:46:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:33,312 INFO L225 Difference]: With dead ends: 8987 [2022-11-20 10:46:33,312 INFO L226 Difference]: Without dead ends: 4551 [2022-11-20 10:46:33,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:46:33,329 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1534 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 6733 mSolverCounterSat, 904 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 7638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 6733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:33,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 2581 Invalid, 7638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [904 Valid, 6733 Invalid, 1 Unknown, 0 Unchecked, 24.4s Time] [2022-11-20 10:46:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2022-11-20 10:46:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4442. [2022-11-20 10:46:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 3109 states have (on average 1.3091026053393373) internal successors, (4070), 3161 states have internal predecessors, (4070), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2022-11-20 10:46:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 6251 transitions. [2022-11-20 10:46:33,591 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 6251 transitions. Word has length 194 [2022-11-20 10:46:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:33,592 INFO L495 AbstractCegarLoop]: Abstraction has 4442 states and 6251 transitions. [2022-11-20 10:46:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:46:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 6251 transitions. [2022-11-20 10:46:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 10:46:33,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:33,602 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:46:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:46:33,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 868610307, now seen corresponding path program 1 times [2022-11-20 10:46:33,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049534137] [2022-11-20 10:46:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:46:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:46:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:46:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:46:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:46:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:46:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:46:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:46:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 10:46:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 10:46:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 10:46:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-20 10:46:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049534137] [2022-11-20 10:46:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049534137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:36,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589458286] [2022-11-20 10:46:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:36,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:36,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:36,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:36,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:46:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:38,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 7531 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:46:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-20 10:46:38,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:38,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589458286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:38,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:38,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2022-11-20 10:46:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436922913] [2022-11-20 10:46:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:38,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:46:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:46:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:46:38,541 INFO L87 Difference]: Start difference. First operand 4442 states and 6251 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:46:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:39,457 INFO L93 Difference]: Finished difference Result 8880 states and 12509 transitions. [2022-11-20 10:46:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:46:39,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2022-11-20 10:46:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:39,481 INFO L225 Difference]: With dead ends: 8880 [2022-11-20 10:46:39,481 INFO L226 Difference]: Without dead ends: 4442 [2022-11-20 10:46:39,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:46:39,504 INFO L413 NwaCegarLoop]: 1955 mSDtfsCounter, 35 mSDsluCounter, 7673 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9628 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:39,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9628 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:46:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-11-20 10:46:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4442. [2022-11-20 10:46:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 3109 states have (on average 1.3078160180122225) internal successors, (4066), 3161 states have internal predecessors, (4066), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2022-11-20 10:46:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 6247 transitions. [2022-11-20 10:46:39,776 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 6247 transitions. Word has length 194 [2022-11-20 10:46:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:39,777 INFO L495 AbstractCegarLoop]: Abstraction has 4442 states and 6247 transitions. [2022-11-20 10:46:39,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:46:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 6247 transitions. [2022-11-20 10:46:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 10:46:39,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:39,788 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:46:39,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:40,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:40,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash 59263681, now seen corresponding path program 1 times [2022-11-20 10:46:40,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:40,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653888015] [2022-11-20 10:46:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:46:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:46:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:46:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:46:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:46:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:46:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:46:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:46:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:46:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 10:46:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 10:46:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 10:46:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-20 10:46:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:42,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653888015] [2022-11-20 10:46:42,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653888015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:42,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534760729] [2022-11-20 10:46:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:42,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:42,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:46:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 7532 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-20 10:46:44,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:44,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:46:45,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 10:46:45,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 10:46:45,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 10:46:45,540 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:46:45,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:46:45,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:45,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:45,669 INFO L321 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2022-11-20 10:46:45,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 24 [2022-11-20 10:46:45,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:45,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:46:45,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 10:46:45,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 10:46:46,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 10:46:46,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:46,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:46,472 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:46:46,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 10:46:46,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-20 10:46:46,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-20 10:46:46,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-20 10:46:47,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2022-11-20 10:46:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:47,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:46:48,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:46:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:48,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:48,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 33 [2022-11-20 10:46:48,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:48,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 10:46:48,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:46:48,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2022-11-20 10:46:50,630 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_bdc_ep_enable_~ep#1.base_BEFORE_CALL_1| Int)) (not (= |v_bdc_ep_enable_~ep#1.base_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.base| |v_bdc_ep_enable_~ep#1.base_BEFORE_CALL_1|) 100)))) is different from true [2022-11-20 10:46:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 100 proven. 28 refuted. 6 times theorem prover too weak. 45 trivial. 1 not checked. [2022-11-20 10:46:54,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-20 10:46:56,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534760729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:56,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:46:56,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 34, 10] total 50 [2022-11-20 10:46:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731602401] [2022-11-20 10:46:56,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:56,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 10:46:56,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 10:46:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2211, Unknown=8, NotChecked=94, Total=2450 [2022-11-20 10:46:56,093 INFO L87 Difference]: Start difference. First operand 4442 states and 6247 transitions. Second operand has 50 states, 43 states have (on average 4.209302325581396) internal successors, (181), 35 states have internal predecessors, (181), 17 states have call successors, (55), 15 states have call predecessors, (55), 15 states have return successors, (38), 17 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-20 10:47:41,535 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 10:49:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:23,173 INFO L93 Difference]: Finished difference Result 10225 states and 14644 transitions. [2022-11-20 10:49:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 10:49:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 43 states have (on average 4.209302325581396) internal successors, (181), 35 states have internal predecessors, (181), 17 states have call successors, (55), 15 states have call predecessors, (55), 15 states have return successors, (38), 17 states have call predecessors, (38), 16 states have call successors, (38) Word has length 194 [2022-11-20 10:49:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:23,209 INFO L225 Difference]: With dead ends: 10225 [2022-11-20 10:49:23,209 INFO L226 Difference]: Without dead ends: 5787 [2022-11-20 10:49:23,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 398 SyntacticMatches, 7 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=506, Invalid=8228, Unknown=12, NotChecked=184, Total=8930 [2022-11-20 10:49:23,232 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 2052 mSDsluCounter, 27923 mSDsCounter, 0 mSdLazyCounter, 46112 mSolverCounterSat, 1342 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 28883 SdHoareTripleChecker+Invalid, 57371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1342 IncrementalHoareTripleChecker+Valid, 46112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9916 IncrementalHoareTripleChecker+Unchecked, 136.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:23,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 28883 Invalid, 57371 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1342 Valid, 46112 Invalid, 1 Unknown, 9916 Unchecked, 136.7s Time] [2022-11-20 10:49:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-11-20 10:49:23,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5081. [2022-11-20 10:49:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 3612 states have (on average 1.3247508305647842) internal successors, (4785), 3678 states have internal predecessors, (4785), 1144 states have call successors, (1144), 309 states have call predecessors, (1144), 324 states have return successors, (1231), 1125 states have call predecessors, (1231), 1143 states have call successors, (1231) [2022-11-20 10:49:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 7160 transitions. [2022-11-20 10:49:23,659 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 7160 transitions. Word has length 194 [2022-11-20 10:49:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 5081 states and 7160 transitions. [2022-11-20 10:49:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 43 states have (on average 4.209302325581396) internal successors, (181), 35 states have internal predecessors, (181), 17 states have call successors, (55), 15 states have call predecessors, (55), 15 states have return successors, (38), 17 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-20 10:49:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 7160 transitions. [2022-11-20 10:49:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 10:49:23,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:23,672 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:49:23,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:49:23,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:23,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1875487690, now seen corresponding path program 1 times [2022-11-20 10:49:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:23,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039940225] [2022-11-20 10:49:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:23,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:49:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:49:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:49:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:49:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:49:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:49:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:49:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:49:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 10:49:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 10:49:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-20 10:49:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-20 10:49:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-20 10:49:26,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:26,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039940225] [2022-11-20 10:49:26,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039940225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:26,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997411355] [2022-11-20 10:49:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:26,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:26,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:49:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 7549 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:49:28,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-20 10:49:28,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:28,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997411355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:28,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:28,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-20 10:49:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101504787] [2022-11-20 10:49:28,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:28,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:28,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:28,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:28,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:28,557 INFO L87 Difference]: Start difference. First operand 5081 states and 7160 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:49:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:28,958 INFO L93 Difference]: Finished difference Result 9839 states and 13815 transitions. [2022-11-20 10:49:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:49:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 195 [2022-11-20 10:49:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:29,008 INFO L225 Difference]: With dead ends: 9839 [2022-11-20 10:49:29,008 INFO L226 Difference]: Without dead ends: 4732 [2022-11-20 10:49:29,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:49:29,036 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 6 mSDsluCounter, 8125 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10162 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:29,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10162 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-11-20 10:49:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4702. [2022-11-20 10:49:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4702 states, 3293 states have (on average 1.3024597631339205) internal successors, (4289), 3347 states have internal predecessors, (4289), 1106 states have call successors, (1106), 296 states have call predecessors, (1106), 302 states have return successors, (1149), 1090 states have call predecessors, (1149), 1105 states have call successors, (1149) [2022-11-20 10:49:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 6544 transitions. [2022-11-20 10:49:29,322 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 6544 transitions. Word has length 195 [2022-11-20 10:49:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:29,322 INFO L495 AbstractCegarLoop]: Abstraction has 4702 states and 6544 transitions. [2022-11-20 10:49:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:49:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 6544 transitions. [2022-11-20 10:49:29,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-20 10:49:29,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:29,332 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:49:29,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:29,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:49:29,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1355245778, now seen corresponding path program 2 times [2022-11-20 10:49:29,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:29,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127313204] [2022-11-20 10:49:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:29,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:49:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:49:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:49:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:49:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:49:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:49:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 10:49:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:49:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 10:49:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 10:49:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-20 10:49:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-20 10:49:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 10:49:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-20 10:49:32,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127313204] [2022-11-20 10:49:32,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127313204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695404734] [2022-11-20 10:49:32,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:32,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:32,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:32,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:32,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:49:34,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:49:34,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:34,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 7579 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 10:49:34,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:34,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 10:49:34,609 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1718 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1718) |c_#memory_int|)) is different from true [2022-11-20 10:49:34,629 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10| Int) (v_ArrVal_1718 (Array Int Int))) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10| v_ArrVal_1718) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10|))) is different from true [2022-11-20 10:49:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:49:34,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:49:34,747 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1719 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1719) |c_#memory_int|)) is different from true [2022-11-20 10:49:34,764 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11| Int) (v_ArrVal_1719 (Array Int Int))) (and (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11|) (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11| v_ArrVal_1719)))) is different from true [2022-11-20 10:49:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:49:34,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:49:34,861 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1720 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1720) |c_#memory_int|)) is different from true [2022-11-20 10:49:34,878 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12| Int) (v_ArrVal_1720 (Array Int Int))) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12| v_ArrVal_1720) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12|))) is different from true [2022-11-20 10:49:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:49:34,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:49:35,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 10:49:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 27 not checked. [2022-11-20 10:49:35,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:35,542 WARN L837 $PredicateComparison]: unable to prove that (forall ((bdc_gadget_ep_enable_~desc.offset Int) (|v_#Ultimate.C_memset_#ptr.base_20| Int) (v_ArrVal_1729 (Array Int Int))) (or (not (= 5 (mod (mod (select (select (store |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_20| v_ArrVal_1729) |c_ULTIMATE.start_ldv_main_exported_3_~ldvarg0~0#1.base|) (+ bdc_gadget_ep_enable_~desc.offset 1)) 256) 4294967296))) (< |v_#Ultimate.C_memset_#ptr.base_20| |c_ULTIMATE.start_ldv_main_exported_3_~#ldvarg1~0#1.base|))) is different from false [2022-11-20 10:49:35,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695404734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:35,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:35,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25] total 33 [2022-11-20 10:49:35,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136463050] [2022-11-20 10:49:35,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 10:49:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 10:49:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=801, Unknown=7, NotChecked=434, Total=1332 [2022-11-20 10:49:35,551 INFO L87 Difference]: Start difference. First operand 4702 states and 6544 transitions. Second operand has 33 states, 28 states have (on average 4.964285714285714) internal successors, (139), 27 states have internal predecessors, (139), 11 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (31), 12 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 10:49:38,339 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12| Int) (v_ArrVal_1720 (Array Int Int))) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12| v_ArrVal_1720) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_12|))) (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10| Int) (v_ArrVal_1718 (Array Int Int))) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10| v_ArrVal_1718) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_10|))) (not (= 4 |c_ldv_memset_#in~n|)) (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11| Int) (v_ArrVal_1719 (Array Int Int))) (and (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11|) (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_11| v_ArrVal_1719))))) is different from true [2022-11-20 10:50:03,512 WARN L539 Checker$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 10:50:40,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:50:43,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:51:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:11,654 INFO L93 Difference]: Finished difference Result 9659 states and 13517 transitions. [2022-11-20 10:51:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:51:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 4.964285714285714) internal successors, (139), 27 states have internal predecessors, (139), 11 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (31), 12 states have call predecessors, (31), 10 states have call successors, (31) Word has length 197 [2022-11-20 10:51:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:11,675 INFO L225 Difference]: With dead ends: 9659 [2022-11-20 10:51:11,675 INFO L226 Difference]: Without dead ends: 4961 [2022-11-20 10:51:11,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=1895, Unknown=9, NotChecked=760, Total=2862 [2022-11-20 10:51:11,690 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1765 mSDsluCounter, 10225 mSDsCounter, 0 mSdLazyCounter, 29969 mSolverCounterSat, 1360 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 10895 SdHoareTripleChecker+Invalid, 46282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 29969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 14952 IncrementalHoareTripleChecker+Unchecked, 94.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:11,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 10895 Invalid, 46282 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1360 Valid, 29969 Invalid, 1 Unknown, 14952 Unchecked, 94.6s Time] [2022-11-20 10:51:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2022-11-20 10:51:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 4722. [2022-11-20 10:51:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3305 states have (on average 1.3019667170953102) internal successors, (4303), 3365 states have internal predecessors, (4303), 1106 states have call successors, (1106), 296 states have call predecessors, (1106), 310 states have return successors, (1171), 1092 states have call predecessors, (1171), 1105 states have call successors, (1171) [2022-11-20 10:51:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 6580 transitions. [2022-11-20 10:51:12,019 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 6580 transitions. Word has length 197 [2022-11-20 10:51:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:12,020 INFO L495 AbstractCegarLoop]: Abstraction has 4722 states and 6580 transitions. [2022-11-20 10:51:12,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 4.964285714285714) internal successors, (139), 27 states have internal predecessors, (139), 11 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (31), 12 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-20 10:51:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 6580 transitions. [2022-11-20 10:51:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 10:51:12,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:12,030 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:51:12,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:12,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:12,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1868768031, now seen corresponding path program 3 times [2022-11-20 10:51:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325374913] [2022-11-20 10:51:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:51:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:51:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:51:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:51:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:51:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:51:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 10:51:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:51:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:51:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:51:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 10:51:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-20 10:51:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-20 10:51:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 10:51:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:14,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325374913] [2022-11-20 10:51:14,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325374913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:14,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313860914] [2022-11-20 10:51:14,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:51:14,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:14,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:14,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:14,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:51:16,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:51:16,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:51:16,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 7117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:51:16,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 10:51:17,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 10:51:17,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313860914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:51:17,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:51:17,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-11-20 10:51:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140664190] [2022-11-20 10:51:17,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:51:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:51:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:51:17,703 INFO L87 Difference]: Start difference. First operand 4722 states and 6580 transitions. Second operand has 20 states, 18 states have (on average 6.5) internal successors, (117), 16 states have internal predecessors, (117), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 10:51:36,276 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 10:52:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:18,455 INFO L93 Difference]: Finished difference Result 9589 states and 13417 transitions. [2022-11-20 10:52:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:52:18,456 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.5) internal successors, (117), 16 states have internal predecessors, (117), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 200 [2022-11-20 10:52:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:18,479 INFO L225 Difference]: With dead ends: 9589 [2022-11-20 10:52:18,479 INFO L226 Difference]: Without dead ends: 4847 [2022-11-20 10:52:18,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 439 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=1325, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:52:18,494 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1726 mSDsluCounter, 6143 mSDsCounter, 0 mSdLazyCounter, 18155 mSolverCounterSat, 1301 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 19457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 18155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:18,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 6765 Invalid, 19457 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1301 Valid, 18155 Invalid, 1 Unknown, 0 Unchecked, 59.3s Time] [2022-11-20 10:52:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2022-11-20 10:52:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4762. [2022-11-20 10:52:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 3337 states have (on average 1.3056637698531615) internal successors, (4357), 3403 states have internal predecessors, (4357), 1106 states have call successors, (1106), 300 states have call predecessors, (1106), 318 states have return successors, (1173), 1090 states have call predecessors, (1173), 1105 states have call successors, (1173) [2022-11-20 10:52:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6636 transitions. [2022-11-20 10:52:18,830 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6636 transitions. Word has length 200 [2022-11-20 10:52:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:18,830 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 6636 transitions. [2022-11-20 10:52:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.5) internal successors, (117), 16 states have internal predecessors, (117), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-20 10:52:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6636 transitions. [2022-11-20 10:52:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-20 10:52:18,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:18,841 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:52:18,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:19,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:19,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash 978738034, now seen corresponding path program 4 times [2022-11-20 10:52:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:19,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636373035] [2022-11-20 10:52:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:52:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:52:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:52:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:52:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:52:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:52:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:52:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:52:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:52:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:52:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:52:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 10:52:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 10:52:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 10:52:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 10:52:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 10:52:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 10:52:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-20 10:52:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-20 10:52:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636373035] [2022-11-20 10:52:21,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636373035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563670760] [2022-11-20 10:52:21,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:52:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:21,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:21,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:52:25,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:52:25,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 7669 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:52:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-20 10:52:25,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-20 10:52:26,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563670760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:26,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:52:26,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 22 [2022-11-20 10:52:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134945986] [2022-11-20 10:52:26,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:26,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:52:26,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:52:26,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:52:26,267 INFO L87 Difference]: Start difference. First operand 4762 states and 6636 transitions. Second operand has 22 states, 20 states have (on average 5.95) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 10:52:51,538 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 10:52:56,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:53:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:41,773 INFO L93 Difference]: Finished difference Result 9641 states and 13477 transitions. [2022-11-20 10:53:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:53:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.95) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 203 [2022-11-20 10:53:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:41,792 INFO L225 Difference]: With dead ends: 9641 [2022-11-20 10:53:41,792 INFO L226 Difference]: Without dead ends: 4871 [2022-11-20 10:53:41,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:53:41,804 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1581 mSDsluCounter, 7892 mSDsCounter, 0 mSdLazyCounter, 23755 mSolverCounterSat, 928 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 8514 SdHoareTripleChecker+Invalid, 24684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 23755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:41,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 8514 Invalid, 24684 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [928 Valid, 23755 Invalid, 1 Unknown, 0 Unchecked, 74.1s Time] [2022-11-20 10:53:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2022-11-20 10:53:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4770. [2022-11-20 10:53:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 3345 states have (on average 1.3073243647234678) internal successors, (4373), 3411 states have internal predecessors, (4373), 1106 states have call successors, (1106), 300 states have call predecessors, (1106), 318 states have return successors, (1161), 1090 states have call predecessors, (1161), 1105 states have call successors, (1161) [2022-11-20 10:53:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 6640 transitions. [2022-11-20 10:53:42,072 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 6640 transitions. Word has length 203 [2022-11-20 10:53:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:42,072 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 6640 transitions. [2022-11-20 10:53:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.95) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 10:53:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 6640 transitions. [2022-11-20 10:53:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-20 10:53:42,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:42,082 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:53:42,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:42,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:42,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash 352399937, now seen corresponding path program 5 times [2022-11-20 10:53:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:42,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808664875] [2022-11-20 10:53:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:42,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:53:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:53:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:53:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:53:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:53:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:53:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:53:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:53:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:53:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:53:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 10:53:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:53:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:53:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:53:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-20 10:53:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 10:53:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-20 10:53:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-20 10:53:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 64 proven. 48 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 10:53:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808664875] [2022-11-20 10:53:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808664875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879889979] [2022-11-20 10:53:58,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:53:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:58,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:58,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:54:21,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 10:54:21,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 7714 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-20 10:54:21,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:21,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 10:54:22,619 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3273 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3273) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,625 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3274 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3274) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,636 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3275 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3275) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,645 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3277 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3277) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,667 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3277 (Array Int Int)) (|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_19| Int)) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_19| v_ArrVal_3277) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_19|))) is different from true [2022-11-20 10:54:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:54:22,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:54:22,917 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3279 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3279) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,922 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3280 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3280) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,929 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3281 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3281))) is different from true [2022-11-20 10:54:22,936 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3282 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3282) |c_#memory_int|)) is different from true [2022-11-20 10:54:22,954 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_20| Int) (v_ArrVal_3282 (Array Int Int))) (and (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_20| v_ArrVal_3282) |c_#memory_int|) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_20|))) is different from true [2022-11-20 10:54:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:54:22,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:54:23,121 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3283 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3283) |c_#memory_int|)) is different from true [2022-11-20 10:54:23,128 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3284 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3284) |c_#memory_int|)) is different from true [2022-11-20 10:54:23,135 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3285 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3285) |c_#memory_int|)) is different from true [2022-11-20 10:54:23,142 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3286 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_3286) |c_#memory_int|)) is different from true [2022-11-20 10:54:23,163 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3286 (Array Int Int)) (|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_21| Int)) (and (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_21|) (= (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_21| v_ArrVal_3286) |c_#memory_int|))) is different from true [2022-11-20 10:54:23,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:54:23,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 10:54:23,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 10:54:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 117 not checked. [2022-11-20 10:54:23,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:24,314 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#ptr.base_50| Int) (v_ArrVal_3298 (Array Int Int)) (bdc_gadget_ep_enable_~desc.offset Int)) (or (not (= 5 (mod (mod (select (select (store |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_50| v_ArrVal_3298) |c_ULTIMATE.start_ldv_main_exported_3_~ldvarg0~0#1.base|) (+ bdc_gadget_ep_enable_~desc.offset 1)) 256) 4294967296))) (< |v_#Ultimate.C_memset_#ptr.base_50| |c_ULTIMATE.start_ldv_main_exported_3_~#ldvarg1~0#1.base|))) is different from false [2022-11-20 10:54:24,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879889979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:24,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:24,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2022-11-20 10:54:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170548499] [2022-11-20 10:54:24,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 10:54:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 10:54:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2675, Unknown=16, NotChecked=1904, Total=4830 [2022-11-20 10:54:24,327 INFO L87 Difference]: Start difference. First operand 4770 states and 6640 transitions. Second operand has 66 states, 55 states have (on average 3.1818181818181817) internal successors, (175), 54 states have internal predecessors, (175), 24 states have call successors, (46), 9 states have call predecessors, (46), 18 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-20 10:54:26,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:36,374 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 10:57:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:41,870 INFO L93 Difference]: Finished difference Result 14981 states and 21207 transitions. [2022-11-20 10:57:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-20 10:57:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 55 states have (on average 3.1818181818181817) internal successors, (175), 54 states have internal predecessors, (175), 24 states have call successors, (46), 9 states have call predecessors, (46), 18 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) Word has length 206 [2022-11-20 10:57:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:41,909 INFO L225 Difference]: With dead ends: 14981 [2022-11-20 10:57:41,909 INFO L226 Difference]: Without dead ends: 10215 [2022-11-20 10:57:41,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 298 SyntacticMatches, 5 SemanticMatches, 147 ConstructedPredicates, 16 IntricatePredicates, 1 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1369, Invalid=16138, Unknown=113, NotChecked=4432, Total=22052 [2022-11-20 10:57:41,927 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 3946 mSDsluCounter, 23819 mSDsCounter, 0 mSdLazyCounter, 65146 mSolverCounterSat, 3643 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 24764 SdHoareTripleChecker+Invalid, 116651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 3643 IncrementalHoareTripleChecker+Valid, 65146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 47861 IncrementalHoareTripleChecker+Unchecked, 186.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:41,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 24764 Invalid, 116651 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [3643 Valid, 65146 Invalid, 1 Unknown, 47861 Unchecked, 186.6s Time] [2022-11-20 10:57:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2022-11-20 10:57:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 9167. [2022-11-20 10:57:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9167 states, 6574 states have (on average 1.3173106175844236) internal successors, (8660), 6703 states have internal predecessors, (8660), 2007 states have call successors, (2007), 548 states have call predecessors, (2007), 585 states have return successors, (2166), 1975 states have call predecessors, (2166), 2006 states have call successors, (2166) [2022-11-20 10:57:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9167 states to 9167 states and 12833 transitions. [2022-11-20 10:57:42,495 INFO L78 Accepts]: Start accepts. Automaton has 9167 states and 12833 transitions. Word has length 206 [2022-11-20 10:57:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:42,496 INFO L495 AbstractCegarLoop]: Abstraction has 9167 states and 12833 transitions. [2022-11-20 10:57:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 55 states have (on average 3.1818181818181817) internal successors, (175), 54 states have internal predecessors, (175), 24 states have call successors, (46), 9 states have call predecessors, (46), 18 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-20 10:57:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9167 states and 12833 transitions. [2022-11-20 10:57:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-20 10:57:42,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:42,533 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:42,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:42,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:42,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1237573720, now seen corresponding path program 1 times [2022-11-20 10:57:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:42,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609790728] [2022-11-20 10:57:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:57:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:57:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:57:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:57:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 10:57:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:57:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:57:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 10:57:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:57:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:57:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 10:57:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:57:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:57:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:57:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:57:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:57:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:57:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 10:57:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:57:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:57:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-20 10:57:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-11-20 10:57:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-11-20 10:57:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-11-20 10:57:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-20 10:57:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609790728] [2022-11-20 10:57:44,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609790728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102780310] [2022-11-20 10:57:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:44,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:44,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:57:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:46,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 8895 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:57:46,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-20 10:57:46,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:46,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102780310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:46,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:57:46,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-11-20 10:57:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222972996] [2022-11-20 10:57:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:57:46,796 INFO L87 Difference]: Start difference. First operand 9167 states and 12833 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 10:57:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:47,620 INFO L93 Difference]: Finished difference Result 26622 states and 37261 transitions. [2022-11-20 10:57:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 356 [2022-11-20 10:57:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:47,692 INFO L225 Difference]: With dead ends: 26622 [2022-11-20 10:57:47,692 INFO L226 Difference]: Without dead ends: 17459 [2022-11-20 10:57:47,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:57:47,724 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 1928 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 5164 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:47,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 5164 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17459 states. [2022-11-20 10:57:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17459 to 17435. [2022-11-20 10:57:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17435 states, 12550 states have (on average 1.3156175298804782) internal successors, (16511), 12794 states have internal predecessors, (16511), 3772 states have call successors, (3772), 1049 states have call predecessors, (3772), 1112 states have return successors, (4043), 3705 states have call predecessors, (4043), 3771 states have call successors, (4043) [2022-11-20 10:57:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17435 states to 17435 states and 24326 transitions. [2022-11-20 10:57:49,100 INFO L78 Accepts]: Start accepts. Automaton has 17435 states and 24326 transitions. Word has length 356 [2022-11-20 10:57:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:49,101 INFO L495 AbstractCegarLoop]: Abstraction has 17435 states and 24326 transitions. [2022-11-20 10:57:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 10:57:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 17435 states and 24326 transitions. [2022-11-20 10:57:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-20 10:57:49,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:49,177 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:49,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:49,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d2f6e1-571e-42a5-bc7f-d29bc6a0612d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:57:49,398 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash -723690987, now seen corresponding path program 1 times [2022-11-20 10:57:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:49,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810578258] [2022-11-20 10:57:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 10:57:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:57:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:57:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 10:57:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 10:57:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:57:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:57:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 10:57:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:57:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:57:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 10:57:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:57:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:57:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:57:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:57:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:57:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:57:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 10:57:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:57:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:57:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-11-20 10:57:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-11-20 10:57:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-20 10:57:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-11-20 10:57:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:57:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-11-20 10:57:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:50,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810578258] [2022-11-20 10:57:50,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810578258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:50,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:50,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:57:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693227630] [2022-11-20 10:57:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:50,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:57:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:57:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:57:50,793 INFO L87 Difference]: Start difference. First operand 17435 states and 24326 transitions. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 3 states have internal predecessors, (190), 2 states have call successors, (44), 10 states have call predecessors, (44), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-20 10:57:59,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:09,937 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 []