./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- 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 12:14:10,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:14:10,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:14:10,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:14:10,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:14:10,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:14:10,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:14:10,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:14:10,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:14:10,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:14:10,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:14:10,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:14:10,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:14:10,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:14:10,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:14:10,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:14:10,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:14:10,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:14:10,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:14:10,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:14:10,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:14:10,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:14:10,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:14:10,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:14:10,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:14:10,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:14:10,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:14:10,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:14:10,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:14:10,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:14:10,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:14:10,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:14:10,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:14:10,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:14:10,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:14:10,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:14:10,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:14:10,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:14:10,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:14:10,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:14:10,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:14:10,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:14:10,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:14:10,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:14:10,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:14:10,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:14:10,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:14:10,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:14:10,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:14:10,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:14:10,913 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:14:10,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:14:10,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:14:10,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:14:10,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:14:10,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:14:10,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:14:10,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:14:10,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:14:10,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:14:10,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:14:10,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:14:10,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:14:10,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:10,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:14:10,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:14:10,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:14:10,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:14:10,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:14:10,921 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:14:10,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:14:10,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:14:10,922 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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2022-11-20 12:14:11,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:14:11,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:14:11,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:14:11,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:14:11,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:14:11,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-11-20 12:14:14,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:14:15,106 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:14:15,107 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-11-20 12:14:15,148 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/data/9b3188bc7/c58a3ef2903c4941b3b58547e2fe13f7/FLAGe2ebed702 [2022-11-20 12:14:15,165 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/data/9b3188bc7/c58a3ef2903c4941b3b58547e2fe13f7 [2022-11-20 12:14:15,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:14:15,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:14:15,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:15,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:14:15,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:14:15,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:15" (1/1) ... [2022-11-20 12:14:15,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb95c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:15, skipping insertion in model container [2022-11-20 12:14:15,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:15" (1/1) ... [2022-11-20 12:14:15,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:14:15,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:16,372 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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-11-20 12:14:17,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:17,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:14:17,165 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_157d48cf-ee4d-41bf-a9de-36afb2e80ece/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-11-20 12:14:17,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:17,586 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:14:17,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17 WrapperNode [2022-11-20 12:14:17,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:17,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:17,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:14:17,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:14:17,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:17,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:17,852 INFO L138 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2371 [2022-11-20 12:14:17,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:17,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:14:17,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:14:17,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:14:17,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:17,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:17,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:17,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:14:18,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:14:18,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:14:18,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:14:18,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (1/1) ... [2022-11-20 12:14:18,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:18,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:14:18,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:14:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:14:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:14:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 12:14:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 12:14:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:14:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:14:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:14:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:14:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2022-11-20 12:14:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2022-11-20 12:14:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-20 12:14:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-20 12:14:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2022-11-20 12:14:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2022-11-20 12:14:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:14:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:14:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2022-11-20 12:14:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2022-11-20 12:14:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:14:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:14:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:14:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:14:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-20 12:14:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-20 12:14:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 12:14:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 12:14:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 12:14:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 12:14:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2022-11-20 12:14:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2022-11-20 12:14:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 12:14:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 12:14:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:14:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-20 12:14:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-20 12:14:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:14:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-20 12:14:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-20 12:14:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 12:14:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 12:14:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 12:14:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 12:14:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 12:14:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 12:14:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:14:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:14:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2022-11-20 12:14:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2022-11-20 12:14:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 12:14:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 12:14:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-20 12:14:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-20 12:14:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 12:14:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 12:14:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 12:14:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 12:14:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 12:14:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 12:14:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-11-20 12:14:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-11-20 12:14:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 12:14:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 12:14:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 12:14:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-20 12:14:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-20 12:14:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 12:14:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 12:14:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:14:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 12:14:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 12:14:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:14:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 12:14:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 12:14:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:14:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:14:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2022-11-20 12:14:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2022-11-20 12:14:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:14:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 12:14:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 12:14:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:14:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:14:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2022-11-20 12:14:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2022-11-20 12:14:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:14:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:14:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 12:14:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 12:14:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:14:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2022-11-20 12:14:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2022-11-20 12:14:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 12:14:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 12:14:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2022-11-20 12:14:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2022-11-20 12:14:18,206 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 12:14:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 12:14:18,206 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 12:14:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 12:14:18,207 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-20 12:14:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-20 12:14:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:14:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:14:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:14:18,940 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:14:18,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:14:19,281 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:14:21,118 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:14:21,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:14:21,132 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:14:21,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:21 BoogieIcfgContainer [2022-11-20 12:14:21,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:14:21,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:14:21,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:14:21,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:14:21,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:14:15" (1/3) ... [2022-11-20 12:14:21,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247ec18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:21, skipping insertion in model container [2022-11-20 12:14:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:17" (2/3) ... [2022-11-20 12:14:21,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247ec18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:21, skipping insertion in model container [2022-11-20 12:14:21,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:21" (3/3) ... [2022-11-20 12:14:21,151 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-11-20 12:14:21,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:14:21,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:14:21,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:14:21,290 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;@606a82a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:14:21,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:14:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 848 states, 604 states have (on average 1.3394039735099337) internal successors, (809), 619 states have internal predecessors, (809), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2022-11-20 12:14:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:14:21,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:21,327 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:14:21,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 75505031, now seen corresponding path program 1 times [2022-11-20 12:14:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:21,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559233392] [2022-11-20 12:14:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:21,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:22,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:14:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:22,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559233392] [2022-11-20 12:14:22,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559233392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:22,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:22,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:14:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466650583] [2022-11-20 12:14:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:14:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:14:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:14:22,076 INFO L87 Difference]: Start difference. First operand has 848 states, 604 states have (on average 1.3394039735099337) internal successors, (809), 619 states have internal predecessors, (809), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:26,012 INFO L93 Difference]: Finished difference Result 2607 states and 3769 transitions. [2022-11-20 12:14:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:26,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-20 12:14:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:26,063 INFO L225 Difference]: With dead ends: 2607 [2022-11-20 12:14:26,063 INFO L226 Difference]: Without dead ends: 1738 [2022-11-20 12:14:26,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:26,087 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1437 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:26,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 2411 Invalid, 1573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [465 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:14:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2022-11-20 12:14:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1640. [2022-11-20 12:14:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1174 states have (on average 1.291311754684838) internal successors, (1516), 1188 states have internal predecessors, (1516), 381 states have call successors, (381), 85 states have call predecessors, (381), 84 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2022-11-20 12:14:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2277 transitions. [2022-11-20 12:14:26,352 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2277 transitions. Word has length 35 [2022-11-20 12:14:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:26,352 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2277 transitions. [2022-11-20 12:14:26,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2277 transitions. [2022-11-20 12:14:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 12:14:26,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:26,356 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:14:26,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:14:26,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1306280452, now seen corresponding path program 1 times [2022-11-20 12:14:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:26,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899880974] [2022-11-20 12:14:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:14:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:26,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899880974] [2022-11-20 12:14:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899880974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399690619] [2022-11-20 12:14:26,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:26,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:26,685 INFO L87 Difference]: Start difference. First operand 1640 states and 2277 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:31,055 INFO L93 Difference]: Finished difference Result 5089 states and 7160 transitions. [2022-11-20 12:14:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:14:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-20 12:14:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:31,089 INFO L225 Difference]: With dead ends: 5089 [2022-11-20 12:14:31,090 INFO L226 Difference]: Without dead ends: 3454 [2022-11-20 12:14:31,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:31,105 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 1398 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 4019 Invalid, 2740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 12:14:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2022-11-20 12:14:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3286. [2022-11-20 12:14:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 2351 states have (on average 1.2913653764355593) internal successors, (3036), 2383 states have internal predecessors, (3036), 758 states have call successors, (758), 169 states have call predecessors, (758), 176 states have return successors, (802), 755 states have call predecessors, (802), 757 states have call successors, (802) [2022-11-20 12:14:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4596 transitions. [2022-11-20 12:14:31,414 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4596 transitions. Word has length 38 [2022-11-20 12:14:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:31,414 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 4596 transitions. [2022-11-20 12:14:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4596 transitions. [2022-11-20 12:14:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 12:14:31,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:31,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:14:31,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:14:31,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1182436900, now seen corresponding path program 1 times [2022-11-20 12:14:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:31,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662697445] [2022-11-20 12:14:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:14:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:14:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:14:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:14:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 12:14:32,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662697445] [2022-11-20 12:14:32,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662697445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:32,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:32,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207605661] [2022-11-20 12:14:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:32,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:32,110 INFO L87 Difference]: Start difference. First operand 3286 states and 4596 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:35,827 INFO L93 Difference]: Finished difference Result 8810 states and 12317 transitions. [2022-11-20 12:14:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:14:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-11-20 12:14:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:35,864 INFO L225 Difference]: With dead ends: 8810 [2022-11-20 12:14:35,864 INFO L226 Difference]: Without dead ends: 5534 [2022-11-20 12:14:35,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:35,888 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1394 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:35,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2939 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 12:14:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-11-20 12:14:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5146. [2022-11-20 12:14:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 3709 states have (on average 1.2820167160959828) internal successors, (4755), 3777 states have internal predecessors, (4755), 1108 states have call successors, (1108), 309 states have call predecessors, (1108), 328 states have return successors, (1187), 1095 states have call predecessors, (1187), 1107 states have call successors, (1187) [2022-11-20 12:14:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7050 transitions. [2022-11-20 12:14:36,267 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7050 transitions. Word has length 143 [2022-11-20 12:14:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7050 transitions. [2022-11-20 12:14:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7050 transitions. [2022-11-20 12:14:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-20 12:14:36,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:36,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:14:36,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:14:36,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash 413859884, now seen corresponding path program 1 times [2022-11-20 12:14:36,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081584869] [2022-11-20 12:14:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:36,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:14:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:14:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:14:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:14:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:14:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081584869] [2022-11-20 12:14:37,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081584869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242485583] [2022-11-20 12:14:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:37,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:37,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:37,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:37,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:14:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:37,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:14:38,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242485583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:38,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:38,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 12:14:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20083073] [2022-11-20 12:14:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:38,101 INFO L87 Difference]: Start difference. First operand 5146 states and 7050 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:39,960 INFO L93 Difference]: Finished difference Result 15426 states and 21144 transitions. [2022-11-20 12:14:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:39,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-11-20 12:14:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:40,031 INFO L225 Difference]: With dead ends: 15426 [2022-11-20 12:14:40,031 INFO L226 Difference]: Without dead ends: 10290 [2022-11-20 12:14:40,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:14:40,060 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1046 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:40,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 4185 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:14:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2022-11-20 12:14:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 10250. [2022-11-20 12:14:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10250 states, 7377 states have (on average 1.2835841127829741) internal successors, (9469), 7549 states have internal predecessors, (9469), 2212 states have call successors, (2212), 617 states have call predecessors, (2212), 660 states have return successors, (2375), 2155 states have call predecessors, (2375), 2211 states have call successors, (2375) [2022-11-20 12:14:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 14056 transitions. [2022-11-20 12:14:40,984 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 14056 transitions. Word has length 136 [2022-11-20 12:14:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:40,988 INFO L495 AbstractCegarLoop]: Abstraction has 10250 states and 14056 transitions. [2022-11-20 12:14:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 14056 transitions. [2022-11-20 12:14:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 12:14:40,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:40,997 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:14:41,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:41,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1703749079, now seen corresponding path program 1 times [2022-11-20 12:14:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:41,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621457184] [2022-11-20 12:14:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 12:14:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:14:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:14:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:14:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:14:41,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:41,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621457184] [2022-11-20 12:14:41,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621457184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:41,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709778927] [2022-11-20 12:14:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:41,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:41,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:41,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:42,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:14:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:42,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:42,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:14:42,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709778927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:42,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:42,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 12:14:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593288070] [2022-11-20 12:14:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:42,899 INFO L87 Difference]: Start difference. First operand 10250 states and 14056 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:45,130 INFO L93 Difference]: Finished difference Result 30738 states and 42162 transitions. [2022-11-20 12:14:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2022-11-20 12:14:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:45,248 INFO L225 Difference]: With dead ends: 30738 [2022-11-20 12:14:45,248 INFO L226 Difference]: Without dead ends: 20498 [2022-11-20 12:14:45,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:14:45,296 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 1057 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:45,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 4474 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:14:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20498 states. [2022-11-20 12:14:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20498 to 20490. [2022-11-20 12:14:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20490 states, 14745 states have (on average 1.2837572058324855) internal successors, (18929), 15093 states have internal predecessors, (18929), 4420 states have call successors, (4420), 1233 states have call predecessors, (4420), 1324 states have return successors, (4739), 4307 states have call predecessors, (4739), 4419 states have call successors, (4739) [2022-11-20 12:14:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20490 states to 20490 states and 28088 transitions. [2022-11-20 12:14:46,741 INFO L78 Accepts]: Start accepts. Automaton has 20490 states and 28088 transitions. Word has length 139 [2022-11-20 12:14:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:46,742 INFO L495 AbstractCegarLoop]: Abstraction has 20490 states and 28088 transitions. [2022-11-20 12:14:46,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20490 states and 28088 transitions. [2022-11-20 12:14:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 12:14:46,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:46,751 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:14:46,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:46,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -907811920, now seen corresponding path program 1 times [2022-11-20 12:14:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:46,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336526604] [2022-11-20 12:14:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:14:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:14:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:14:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:14:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:14:47,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:47,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336526604] [2022-11-20 12:14:47,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336526604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876363985] [2022-11-20 12:14:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:47,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:47,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:47,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:47,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:14:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:48,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:14:48,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876363985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:48,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 12:14:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808626368] [2022-11-20 12:14:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:48,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:48,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:48,688 INFO L87 Difference]: Start difference. First operand 20490 states and 28088 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:51,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:51,648 INFO L93 Difference]: Finished difference Result 61458 states and 84258 transitions. [2022-11-20 12:14:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:14:51,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2022-11-20 12:14:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:51,854 INFO L225 Difference]: With dead ends: 61458 [2022-11-20 12:14:51,855 INFO L226 Difference]: Without dead ends: 40978 [2022-11-20 12:14:51,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:14:51,941 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 1049 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 4821 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:51,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 4821 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:14:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40978 states. [2022-11-20 12:14:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40978 to 40970. [2022-11-20 12:14:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40970 states, 29481 states have (on average 1.2838438316203657) internal successors, (37849), 30181 states have internal predecessors, (37849), 8836 states have call successors, (8836), 2465 states have call predecessors, (8836), 2652 states have return successors, (9443), 8611 states have call predecessors, (9443), 8835 states have call successors, (9443) [2022-11-20 12:14:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40970 states to 40970 states and 56128 transitions. [2022-11-20 12:14:55,002 INFO L78 Accepts]: Start accepts. Automaton has 40970 states and 56128 transitions. Word has length 137 [2022-11-20 12:14:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:55,004 INFO L495 AbstractCegarLoop]: Abstraction has 40970 states and 56128 transitions. [2022-11-20 12:14:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:14:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 40970 states and 56128 transitions. [2022-11-20 12:14:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 12:14:55,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:55,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-20 12:14:55,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:55,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:55,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1470712965, now seen corresponding path program 1 times [2022-11-20 12:14:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:55,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928889873] [2022-11-20 12:14:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:14:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:14:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:14:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:14:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:14:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:14:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:14:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:14:56,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:56,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928889873] [2022-11-20 12:14:56,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928889873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:56,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980937857] [2022-11-20 12:14:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:56,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:56,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:14:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:56,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:56,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:14:57,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:57,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980937857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:57,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:57,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 12:14:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130147466] [2022-11-20 12:14:57,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:14:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:14:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:57,189 INFO L87 Difference]: Start difference. First operand 40970 states and 56128 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:15:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:01,733 INFO L93 Difference]: Finished difference Result 122898 states and 168378 transitions. [2022-11-20 12:15:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-11-20 12:15:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:02,170 INFO L225 Difference]: With dead ends: 122898 [2022-11-20 12:15:02,171 INFO L226 Difference]: Without dead ends: 81374 [2022-11-20 12:15:02,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:15:02,313 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 1048 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:02,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 4360 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:15:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81374 states. [2022-11-20 12:15:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81374 to 81364. [2022-11-20 12:15:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81364 states, 58519 states have (on average 1.2839761445000768) internal successors, (75137), 59907 states have internal predecessors, (75137), 17590 states have call successors, (17590), 4891 states have call predecessors, (17590), 5254 states have return successors, (18706), 17139 states have call predecessors, (18706), 17589 states have call successors, (18706) [2022-11-20 12:15:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81364 states to 81364 states and 111433 transitions. [2022-11-20 12:15:07,878 INFO L78 Accepts]: Start accepts. Automaton has 81364 states and 111433 transitions. Word has length 138 [2022-11-20 12:15:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:07,878 INFO L495 AbstractCegarLoop]: Abstraction has 81364 states and 111433 transitions. [2022-11-20 12:15:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:15:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 81364 states and 111433 transitions. [2022-11-20 12:15:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 12:15:07,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:07,886 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:07,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:08,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1145267611, now seen corresponding path program 1 times [2022-11-20 12:15:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304255573] [2022-11-20 12:15:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:15:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:15:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:15:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:15:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:15:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:15:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:15:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:15:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:15:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:15:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:15:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:15:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:15:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 12:15:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:09,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304255573] [2022-11-20 12:15:09,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304255573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:09,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928243950] [2022-11-20 12:15:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:09,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:09,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:09,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:09,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:15:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:09,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:15:10,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:15:10,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928243950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:10,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:15:10,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-11-20 12:15:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23880350] [2022-11-20 12:15:10,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:10,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:15:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:15:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:10,387 INFO L87 Difference]: Start difference. First operand 81364 states and 111433 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-11-20 12:15:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:30,701 INFO L93 Difference]: Finished difference Result 241596 states and 341432 transitions. [2022-11-20 12:15:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 12:15:30,702 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) Word has length 148 [2022-11-20 12:15:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:32,179 INFO L225 Difference]: With dead ends: 241596 [2022-11-20 12:15:32,180 INFO L226 Difference]: Without dead ends: 159396 [2022-11-20 12:15:32,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 320 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:15:32,421 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 2459 mSDsluCounter, 18989 mSDsCounter, 0 mSdLazyCounter, 13242 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 20914 SdHoareTripleChecker+Invalid, 14208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 13242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:32,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2831 Valid, 20914 Invalid, 14208 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [966 Valid, 13242 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-11-20 12:15:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159396 states. [2022-11-20 12:15:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159396 to 126258. [2022-11-20 12:15:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126258 states, 90677 states have (on average 1.2725718759994264) internal successors, (115393), 93149 states have internal predecessors, (115393), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8348 states have return successors, (30817), 26659 states have call predecessors, (30817), 27231 states have call successors, (30817) [2022-11-20 12:15:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126258 states to 126258 states and 173442 transitions. [2022-11-20 12:15:41,815 INFO L78 Accepts]: Start accepts. Automaton has 126258 states and 173442 transitions. Word has length 148 [2022-11-20 12:15:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:41,815 INFO L495 AbstractCegarLoop]: Abstraction has 126258 states and 173442 transitions. [2022-11-20 12:15:41,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-11-20 12:15:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 126258 states and 173442 transitions. [2022-11-20 12:15:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-20 12:15:41,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:41,828 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:41,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:42,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:42,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 664296714, now seen corresponding path program 1 times [2022-11-20 12:15:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:42,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31630369] [2022-11-20 12:15:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:15:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:15:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:15:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:15:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:15:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:15:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:15:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:15:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:15:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:15:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 12:15:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:15:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:15:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:15:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:15:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:15:43,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:43,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31630369] [2022-11-20 12:15:43,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31630369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:43,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620961359] [2022-11-20 12:15:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:43,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:43,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:43,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157d48cf-ee4d-41bf-a9de-36afb2e80ece/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:15:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:44,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:44,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 12:15:45,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 12:15:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620961359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:45,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:15:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2022-11-20 12:15:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572704092] [2022-11-20 12:15:45,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:15:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:15:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:15:45,583 INFO L87 Difference]: Start difference. First operand 126258 states and 173442 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41)