./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- 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-5e519f3 [2022-11-02 21:00:05,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:05,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:05,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:05,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:05,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:05,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:05,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:05,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:05,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:05,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:05,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:05,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:05,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:05,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:05,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:05,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:05,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:05,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:05,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:05,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:05,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:05,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:05,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:05,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:05,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:05,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:05,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:05,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:05,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:05,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:05,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:06,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:06,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:06,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:06,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:06,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:06,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:06,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:06,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:06,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:06,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:00:06,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:06,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:06,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:06,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:06,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:06,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:06,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:06,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:06,048 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:06,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:06,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:06,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:06,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:06,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:06,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:06,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:06,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:06,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:06,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:06,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:06,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:06,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:06,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:06,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:06,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:06,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:06,055 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:06,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:06,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:06,056 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_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-11-02 21:00:06,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:06,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:06,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:06,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:06,326 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:06,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-02 21:00:06,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/data/626782c0c/fb4c26047aeb4d9e8732567784c0ddad/FLAG2e8b7973e [2022-11-02 21:00:07,253 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:07,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-02 21:00:07,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/data/626782c0c/fb4c26047aeb4d9e8732567784c0ddad/FLAG2e8b7973e [2022-11-02 21:00:07,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/data/626782c0c/fb4c26047aeb4d9e8732567784c0ddad [2022-11-02 21:00:07,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:07,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:07,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:07,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:07,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:07,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:07" (1/1) ... [2022-11-02 21:00:07,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce7f2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:07, skipping insertion in model container [2022-11-02 21:00:07,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:07" (1/1) ... [2022-11-02 21:00:07,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:07,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:09,026 WARN L230 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_77b9ac2f-5457-4315-959a-69ccdaa809ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-02 21:00:09,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:09,621 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:09,798 WARN L230 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_77b9ac2f-5457-4315-959a-69ccdaa809ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-02 21:00:10,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:10,105 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:10,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10 WrapperNode [2022-11-02 21:00:10,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:10,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:10,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:10,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:10,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,335 INFO L138 Inliner]: procedures = 174, calls = 1340, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2613 [2022-11-02 21:00:10,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:10,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:10,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:10,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:10,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:10,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:10,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:10,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:10,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (1/1) ... [2022-11-02 21:00:10,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:10,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-11-02 21:00:10,657 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-11-02 21:00:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-11-02 21:00:10,657 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-11-02 21:00:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 21:00:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-02 21:00:10,658 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-02 21:00:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-02 21:00:10,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-02 21:00:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 21:00:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 21:00:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 21:00:10,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 21:00:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-02 21:00:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-02 21:00:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-02 21:00:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-02 21:00:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 21:00:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 21:00:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 21:00:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 21:00:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 21:00:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 21:00:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-02 21:00:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-02 21:00:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-11-02 21:00:10,662 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-11-02 21:00:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-02 21:00:10,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-02 21:00:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-02 21:00:10,662 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-02 21:00:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-11-02 21:00:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-11-02 21:00:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-11-02 21:00:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-11-02 21:00:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 21:00:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 21:00:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-11-02 21:00:10,664 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-11-02 21:00:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-11-02 21:00:10,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-11-02 21:00:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:00:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 21:00:10,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 21:00:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-11-02 21:00:10,665 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-11-02 21:00:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 21:00:10,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 21:00:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 21:00:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 21:00:10,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 21:00:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 21:00:10,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:00:10,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-02 21:00:10,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-02 21:00:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-11-02 21:00:10,667 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-11-02 21:00:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-11-02 21:00:10,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-11-02 21:00:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-02 21:00:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-02 21:00:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-11-02 21:00:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-11-02 21:00:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-02 21:00:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-02 21:00:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:00:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 21:00:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 21:00:10,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 21:00:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-11-02 21:00:10,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-11-02 21:00:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-02 21:00:10,670 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-02 21:00:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:00:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-02 21:00:10,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-02 21:00:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-02 21:00:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-02 21:00:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-02 21:00:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-02 21:00:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-02 21:00:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-02 21:00:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:00:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 21:00:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-02 21:00:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-02 21:00:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-11-02 21:00:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-11-02 21:00:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 21:00:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 21:00:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-02 21:00:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-02 21:00:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-11-02 21:00:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-11-02 21:00:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-02 21:00:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-02 21:00:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-02 21:00:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-02 21:00:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 21:00:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 21:00:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 21:00:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:11,348 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:11,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:11,666 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 21:00:12,783 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-02 21:00:14,172 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:14,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:14,194 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:00:14,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:14 BoogieIcfgContainer [2022-11-02 21:00:14,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:14,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:14,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:14,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:14,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:07" (1/3) ... [2022-11-02 21:00:14,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304b39d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:14, skipping insertion in model container [2022-11-02 21:00:14,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:10" (2/3) ... [2022-11-02 21:00:14,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304b39d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:14, skipping insertion in model container [2022-11-02 21:00:14,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:14" (3/3) ... [2022-11-02 21:00:14,212 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-02 21:00:14,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:14,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:14,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:14,337 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;@ebd10d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:14,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-02 21:00:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:00:14,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:14,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:14,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash 527149613, now seen corresponding path program 1 times [2022-11-02 21:00:14,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:14,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178428528] [2022-11-02 21:00:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178428528] [2022-11-02 21:00:15,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178428528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:15,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:15,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597690282] [2022-11-02 21:00:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:15,215 INFO L87 Difference]: Start difference. First operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:00:19,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:19,962 INFO L93 Difference]: Finished difference Result 2773 states and 4101 transitions. [2022-11-02 21:00:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-02 21:00:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:20,019 INFO L225 Difference]: With dead ends: 2773 [2022-11-02 21:00:20,019 INFO L226 Difference]: Without dead ends: 1924 [2022-11-02 21:00:20,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:20,046 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 2449 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:20,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 3113 Invalid, 2735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1181 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:00:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-11-02 21:00:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1585. [2022-11-02 21:00:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.36137339055794) internal successors, (1586), 1205 states have internal predecessors, (1586), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-02 21:00:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2253 transitions. [2022-11-02 21:00:20,350 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2253 transitions. Word has length 29 [2022-11-02 21:00:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:20,350 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2253 transitions. [2022-11-02 21:00:20,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:00:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2253 transitions. [2022-11-02 21:00:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:00:20,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:20,363 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:20,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:20,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 195057076, now seen corresponding path program 1 times [2022-11-02 21:00:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:20,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833359895] [2022-11-02 21:00:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833359895] [2022-11-02 21:00:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833359895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:20,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:20,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535861509] [2022-11-02 21:00:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:20,661 INFO L87 Difference]: Start difference. First operand 1585 states and 2253 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:23,038 INFO L93 Difference]: Finished difference Result 1950 states and 2809 transitions. [2022-11-02 21:00:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 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 39 [2022-11-02 21:00:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:23,052 INFO L225 Difference]: With dead ends: 1950 [2022-11-02 21:00:23,053 INFO L226 Difference]: Without dead ends: 1937 [2022-11-02 21:00:23,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:23,056 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 1800 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:23,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1940 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:00:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-11-02 21:00:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1585. [2022-11-02 21:00:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.3605150214592274) internal successors, (1585), 1205 states have internal predecessors, (1585), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-02 21:00:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2252 transitions. [2022-11-02 21:00:23,171 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2252 transitions. Word has length 39 [2022-11-02 21:00:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:23,172 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2252 transitions. [2022-11-02 21:00:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2252 transitions. [2022-11-02 21:00:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:00:23,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:23,175 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:23,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 252315378, now seen corresponding path program 1 times [2022-11-02 21:00:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:23,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3674226] [2022-11-02 21:00:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:23,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3674226] [2022-11-02 21:00:23,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3674226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:23,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:23,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:23,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706414843] [2022-11-02 21:00:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:23,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:23,787 INFO L87 Difference]: Start difference. First operand 1585 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:28,419 INFO L93 Difference]: Finished difference Result 5389 states and 7961 transitions. [2022-11-02 21:00:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 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 39 [2022-11-02 21:00:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:28,446 INFO L225 Difference]: With dead ends: 5389 [2022-11-02 21:00:28,446 INFO L226 Difference]: Without dead ends: 3823 [2022-11-02 21:00:28,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:28,456 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 2527 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 1189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:28,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 3038 Invalid, 2689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1189 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 21:00:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2022-11-02 21:00:28,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3298. [2022-11-02 21:00:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2431 states have (on average 1.3562320032908268) internal successors, (3297), 2507 states have internal predecessors, (3297), 678 states have call successors, (678), 165 states have call predecessors, (678), 188 states have return successors, (793), 669 states have call predecessors, (793), 673 states have call successors, (793) [2022-11-02 21:00:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 4768 transitions. [2022-11-02 21:00:28,743 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 4768 transitions. Word has length 39 [2022-11-02 21:00:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:28,743 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 4768 transitions. [2022-11-02 21:00:28,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 4768 transitions. [2022-11-02 21:00:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:00:28,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:28,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:28,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:28,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,747 INFO L85 PathProgramCache]: Analyzing trace with hash -768568990, now seen corresponding path program 1 times [2022-11-02 21:00:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:28,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967486745] [2022-11-02 21:00:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967486745] [2022-11-02 21:00:29,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967486745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:29,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:29,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677574403] [2022-11-02 21:00:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:29,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:29,254 INFO L87 Difference]: Start difference. First operand 3298 states and 4768 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:33,775 INFO L93 Difference]: Finished difference Result 10872 states and 16391 transitions. [2022-11-02 21:00:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:33,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 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 40 [2022-11-02 21:00:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:33,827 INFO L225 Difference]: With dead ends: 10872 [2022-11-02 21:00:33,828 INFO L226 Difference]: Without dead ends: 7593 [2022-11-02 21:00:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:33,849 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 2546 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 1202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1202 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 2920 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1202 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:00:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2022-11-02 21:00:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 6717. [2022-11-02 21:00:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4956 states have (on average 1.3520984665052462) internal successors, (6701), 5104 states have internal predecessors, (6701), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-02 21:00:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9880 transitions. [2022-11-02 21:00:34,334 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9880 transitions. Word has length 40 [2022-11-02 21:00:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:34,337 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9880 transitions. [2022-11-02 21:00:34,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9880 transitions. [2022-11-02 21:00:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 21:00:34,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:34,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:34,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:34,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1943758837, now seen corresponding path program 1 times [2022-11-02 21:00:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:34,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047083655] [2022-11-02 21:00:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047083655] [2022-11-02 21:00:34,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047083655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478468109] [2022-11-02 21:00:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:34,643 INFO L87 Difference]: Start difference. First operand 6717 states and 9880 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:38,817 INFO L93 Difference]: Finished difference Result 7591 states and 11290 transitions. [2022-11-02 21:00:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 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 41 [2022-11-02 21:00:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:38,864 INFO L225 Difference]: With dead ends: 7591 [2022-11-02 21:00:38,865 INFO L226 Difference]: Without dead ends: 7588 [2022-11-02 21:00:38,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:38,872 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 2530 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 1195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:38,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2632 Valid, 2939 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1195 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:00:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2022-11-02 21:00:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 6718. [2022-11-02 21:00:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 4957 states have (on average 1.3520274359491629) internal successors, (6702), 5105 states have internal predecessors, (6702), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-02 21:00:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9881 transitions. [2022-11-02 21:00:39,404 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9881 transitions. Word has length 41 [2022-11-02 21:00:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,405 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 9881 transitions. [2022-11-02 21:00:39,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9881 transitions. [2022-11-02 21:00:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:00:39,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,409 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:39,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash 126580421, now seen corresponding path program 1 times [2022-11-02 21:00:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:39,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500701513] [2022-11-02 21:00:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:39,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500701513] [2022-11-02 21:00:39,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500701513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:39,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:39,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:39,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424946826] [2022-11-02 21:00:39,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:39,648 INFO L87 Difference]: Start difference. First operand 6718 states and 9881 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:41,899 INFO L93 Difference]: Finished difference Result 7587 states and 11286 transitions. [2022-11-02 21:00:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:41,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 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 42 [2022-11-02 21:00:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:41,963 INFO L225 Difference]: With dead ends: 7587 [2022-11-02 21:00:41,963 INFO L226 Difference]: Without dead ends: 7584 [2022-11-02 21:00:41,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:41,970 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 1781 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:41,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 1877 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:00:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2022-11-02 21:00:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 6717. [2022-11-02 21:00:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4957 states have (on average 1.3518257010288481) internal successors, (6701), 5104 states have internal predecessors, (6701), 1361 states have call successors, (1361), 327 states have call predecessors, (1361), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-02 21:00:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9879 transitions. [2022-11-02 21:00:42,486 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9879 transitions. Word has length 42 [2022-11-02 21:00:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:42,488 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9879 transitions. [2022-11-02 21:00:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9879 transitions. [2022-11-02 21:00:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 21:00:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:42,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:00:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:42,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -371370760, now seen corresponding path program 1 times [2022-11-02 21:00:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:42,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486966005] [2022-11-02 21:00:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:42,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486966005] [2022-11-02 21:00:42,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486966005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:42,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:42,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443102748] [2022-11-02 21:00:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:42,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:42,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:42,707 INFO L87 Difference]: Start difference. First operand 6717 states and 9879 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:44,977 INFO L93 Difference]: Finished difference Result 7586 states and 11284 transitions. [2022-11-02 21:00:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:44,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 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 43 [2022-11-02 21:00:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,013 INFO L225 Difference]: With dead ends: 7586 [2022-11-02 21:00:45,013 INFO L226 Difference]: Without dead ends: 7574 [2022-11-02 21:00:45,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:45,021 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 1784 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1864 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:00:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-11-02 21:00:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 6707. [2022-11-02 21:00:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6707 states, 4948 states have (on average 1.3516572352465643) internal successors, (6688), 5094 states have internal predecessors, (6688), 1360 states have call successors, (1360), 327 states have call predecessors, (1360), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-02 21:00:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6707 states to 6707 states and 9865 transitions. [2022-11-02 21:00:45,551 INFO L78 Accepts]: Start accepts. Automaton has 6707 states and 9865 transitions. Word has length 43 [2022-11-02 21:00:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:45,551 INFO L495 AbstractCegarLoop]: Abstraction has 6707 states and 9865 transitions. [2022-11-02 21:00:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6707 states and 9865 transitions. [2022-11-02 21:00:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-02 21:00:45,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:45,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:45,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:45,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash -134116982, now seen corresponding path program 1 times [2022-11-02 21:00:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:45,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131747269] [2022-11-02 21:00:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:00:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:00:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:00:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:00:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:00:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:00:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:00:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-02 21:00:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:00:46,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131747269] [2022-11-02 21:00:46,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131747269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:00:46,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112294122] [2022-11-02 21:00:46,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:00:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:00:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:46,015 INFO L87 Difference]: Start difference. First operand 6707 states and 9865 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,934 INFO L93 Difference]: Finished difference Result 16108 states and 23839 transitions. [2022-11-02 21:00:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:00:49,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-11-02 21:00:49,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:49,972 INFO L225 Difference]: With dead ends: 16108 [2022-11-02 21:00:49,973 INFO L226 Difference]: Without dead ends: 9420 [2022-11-02 21:00:49,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:00:49,999 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 2390 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 1496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1496 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 3300 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1496 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 21:00:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2022-11-02 21:00:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 7983. [2022-11-02 21:00:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7983 states, 5905 states have (on average 1.3483488569009314) internal successors, (7962), 6083 states have internal predecessors, (7962), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-02 21:00:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 11681 transitions. [2022-11-02 21:00:50,754 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 11681 transitions. Word has length 143 [2022-11-02 21:00:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,754 INFO L495 AbstractCegarLoop]: Abstraction has 7983 states and 11681 transitions. [2022-11-02 21:00:50,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 11681 transitions. [2022-11-02 21:00:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 21:00:50,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:50,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1543029914, now seen corresponding path program 1 times [2022-11-02 21:00:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665158409] [2022-11-02 21:00:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:00:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:00:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 21:00:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 21:00:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:00:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:00:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:00:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:00:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 21:00:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:51,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665158409] [2022-11-02 21:00:51,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665158409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:51,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761217555] [2022-11-02 21:00:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:51,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:51,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:51,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:00:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:52,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:00:52,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 21:00:52,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:52,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761217555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:52,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:52,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-02 21:00:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046834117] [2022-11-02 21:00:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:00:52,395 INFO L87 Difference]: Start difference. First operand 7983 states and 11681 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,953 INFO L93 Difference]: Finished difference Result 23983 states and 35141 transitions. [2022-11-02 21:00:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-02 21:00:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:54,022 INFO L225 Difference]: With dead ends: 23983 [2022-11-02 21:00:54,022 INFO L226 Difference]: Without dead ends: 16023 [2022-11-02 21:00:54,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:00:54,052 INFO L413 NwaCegarLoop]: 2213 mSDtfsCounter, 1438 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:54,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 7254 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2022-11-02 21:00:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 8031. [2022-11-02 21:00:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.346471281792151) internal successors, (7994), 6107 states have internal predecessors, (7994), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-11-02 21:00:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11763 transitions. [2022-11-02 21:00:55,039 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11763 transitions. Word has length 152 [2022-11-02 21:00:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,040 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11763 transitions. [2022-11-02 21:00:55,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11763 transitions. [2022-11-02 21:00:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 21:00:55,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:55,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:00:55,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:55,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash 531912664, now seen corresponding path program 1 times [2022-11-02 21:00:55,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:55,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4661988] [2022-11-02 21:00:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:00:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:00:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:00:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 21:00:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 21:00:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:00:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:00:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:00:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:00:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:00:56,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4661988] [2022-11-02 21:00:56,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4661988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:56,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158798858] [2022-11-02 21:00:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:56,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:56,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:56,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:00:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:00:57,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:00:57,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:57,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158798858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:57,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-02 21:00:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799519634] [2022-11-02 21:00:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:00:57,434 INFO L87 Difference]: Start difference. First operand 8031 states and 11763 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:58,534 INFO L93 Difference]: Finished difference Result 16277 states and 23887 transitions. [2022-11-02 21:00:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 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 152 [2022-11-02 21:00:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:58,582 INFO L225 Difference]: With dead ends: 16277 [2022-11-02 21:00:58,582 INFO L226 Difference]: Without dead ends: 8269 [2022-11-02 21:00:58,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:00:58,617 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 256 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:58,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2273 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-11-02 21:00:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8031. [2022-11-02 21:00:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.345123799898939) internal successors, (7986), 6099 states have internal predecessors, (7986), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-11-02 21:00:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11755 transitions. [2022-11-02 21:00:59,539 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11755 transitions. Word has length 152 [2022-11-02 21:00:59,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:59,539 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11755 transitions. [2022-11-02 21:00:59,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11755 transitions. [2022-11-02 21:00:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-02 21:00:59,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:59,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:59,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:00:59,770 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 620818428, now seen corresponding path program 1 times [2022-11-02 21:00:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:59,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247320973] [2022-11-02 21:00:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:01:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:01:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:01:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:01:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:01:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 21:01:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:01:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:01:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:00,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247320973] [2022-11-02 21:01:00,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247320973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:00,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336854141] [2022-11-02 21:01:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:00,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:00,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:01:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:01,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 21:01:01,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:01:02,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:01:02,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336854141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:02,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:02,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 31 [2022-11-02 21:01:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373194857] [2022-11-02 21:01:02,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 21:01:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 21:01:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-11-02 21:01:02,492 INFO L87 Difference]: Start difference. First operand 8031 states and 11755 transitions. Second operand has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-02 21:01:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:16,228 INFO L93 Difference]: Finished difference Result 23225 states and 36925 transitions. [2022-11-02 21:01:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:01:16,229 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) Word has length 157 [2022-11-02 21:01:16,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:16,314 INFO L225 Difference]: With dead ends: 23225 [2022-11-02 21:01:16,314 INFO L226 Difference]: Without dead ends: 15201 [2022-11-02 21:01:16,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=1832, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 21:01:16,358 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 3618 mSDsluCounter, 17468 mSDsCounter, 0 mSdLazyCounter, 11152 mSolverCounterSat, 2098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 18752 SdHoareTripleChecker+Invalid, 13250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2098 IncrementalHoareTripleChecker+Valid, 11152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:16,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 18752 Invalid, 13250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2098 Valid, 11152 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-02 21:01:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2022-11-02 21:01:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 8095. [2022-11-02 21:01:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8095 states, 5989 states have (on average 1.3421272332609784) internal successors, (8038), 6147 states have internal predecessors, (8038), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1675 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-11-02 21:01:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 11847 transitions. [2022-11-02 21:01:17,698 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 11847 transitions. Word has length 157 [2022-11-02 21:01:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:17,699 INFO L495 AbstractCegarLoop]: Abstraction has 8095 states and 11847 transitions. [2022-11-02 21:01:17,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-02 21:01:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 11847 transitions. [2022-11-02 21:01:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-02 21:01:17,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:17,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:17,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 21:01:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:01:17,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:17,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1788786096, now seen corresponding path program 1 times [2022-11-02 21:01:17,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:17,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89749501] [2022-11-02 21:01:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:01:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:01:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:01:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:01:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:01:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 21:01:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:01:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:01:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:19,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89749501] [2022-11-02 21:01:19,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89749501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:19,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:19,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 21:01:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681220356] [2022-11-02 21:01:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:01:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:01:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:19,155 INFO L87 Difference]: Start difference. First operand 8095 states and 11847 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-02 21:01:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:25,613 INFO L93 Difference]: Finished difference Result 17480 states and 25811 transitions. [2022-11-02 21:01:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-11-02 21:01:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:25,657 INFO L225 Difference]: With dead ends: 17480 [2022-11-02 21:01:25,657 INFO L226 Difference]: Without dead ends: 9408 [2022-11-02 21:01:25,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:25,682 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 1764 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 5631 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:25,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 5631 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 21:01:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2022-11-02 21:01:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 8135. [2022-11-02 21:01:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8135 states, 6021 states have (on average 1.3416376017272877) internal successors, (8078), 6171 states have internal predecessors, (8078), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-11-02 21:01:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8135 states to 8135 states and 11903 transitions. [2022-11-02 21:01:26,845 INFO L78 Accepts]: Start accepts. Automaton has 8135 states and 11903 transitions. Word has length 169 [2022-11-02 21:01:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:26,846 INFO L495 AbstractCegarLoop]: Abstraction has 8135 states and 11903 transitions. [2022-11-02 21:01:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-02 21:01:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states and 11903 transitions. [2022-11-02 21:01:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-02 21:01:26,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:26,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:01:26,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -92495082, now seen corresponding path program 1 times [2022-11-02 21:01:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:26,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309956460] [2022-11-02 21:01:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:01:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:01:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:01:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:01:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:01:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:01:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:01:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 21:01:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:27,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309956460] [2022-11-02 21:01:27,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309956460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:27,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:27,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:01:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62016752] [2022-11-02 21:01:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:27,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:01:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:27,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:01:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:27,679 INFO L87 Difference]: Start difference. First operand 8135 states and 11903 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-02 21:01:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:34,324 INFO L93 Difference]: Finished difference Result 17522 states and 25845 transitions. [2022-11-02 21:01:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:34,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-11-02 21:01:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:34,365 INFO L225 Difference]: With dead ends: 17522 [2022-11-02 21:01:34,365 INFO L226 Difference]: Without dead ends: 9406 [2022-11-02 21:01:34,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:34,389 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 1768 mSDsluCounter, 4628 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 1226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1226 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:34,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 5623 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1226 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:01:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2022-11-02 21:01:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 8136. [2022-11-02 21:01:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 6022 states have (on average 1.3415808701428098) internal successors, (8079), 6172 states have internal predecessors, (8079), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-11-02 21:01:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 11904 transitions. [2022-11-02 21:01:35,417 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 11904 transitions. Word has length 175 [2022-11-02 21:01:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:35,417 INFO L495 AbstractCegarLoop]: Abstraction has 8136 states and 11904 transitions. [2022-11-02 21:01:35,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-02 21:01:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 11904 transitions. [2022-11-02 21:01:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-02 21:01:35,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:35,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:35,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:01:35,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash -933269753, now seen corresponding path program 1 times [2022-11-02 21:01:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:35,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762522177] [2022-11-02 21:01:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:01:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:01:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:01:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:01:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 21:01:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:01:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 21:01:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762522177] [2022-11-02 21:01:36,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762522177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239871182] [2022-11-02 21:01:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:36,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:36,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:01:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 21:01:37,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:01:38,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239871182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:01:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-02 21:01:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373490718] [2022-11-02 21:01:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:01:38,075 INFO L87 Difference]: Start difference. First operand 8136 states and 11904 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 21:01:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:40,705 INFO L93 Difference]: Finished difference Result 18952 states and 28183 transitions. [2022-11-02 21:01:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:01:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-11-02 21:01:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:40,761 INFO L225 Difference]: With dead ends: 18952 [2022-11-02 21:01:40,761 INFO L226 Difference]: Without dead ends: 10840 [2022-11-02 21:01:40,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 21:01:40,790 INFO L413 NwaCegarLoop]: 2223 mSDtfsCounter, 2479 mSDsluCounter, 19143 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 21366 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:40,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 21366 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:01:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2022-11-02 21:01:41,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 8103. [2022-11-02 21:01:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 5997 states have (on average 1.3408370852092713) internal successors, (8041), 6147 states have internal predecessors, (8041), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1683 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-11-02 21:01:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 11850 transitions. [2022-11-02 21:01:41,814 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 11850 transitions. Word has length 176 [2022-11-02 21:01:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:41,815 INFO L495 AbstractCegarLoop]: Abstraction has 8103 states and 11850 transitions. [2022-11-02 21:01:41,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 21:01:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 11850 transitions. [2022-11-02 21:01:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-02 21:01:41,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:41,830 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:41,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:42,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:42,047 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1055633972, now seen corresponding path program 1 times [2022-11-02 21:01:42,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:42,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65734719] [2022-11-02 21:01:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:01:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:01:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:01:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:01:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 21:01:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:01:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:01:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:01:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:01:43,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65734719] [2022-11-02 21:01:43,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65734719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051049007] [2022-11-02 21:01:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:43,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:43,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:43,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:43,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:01:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:44,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 21:01:44,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:01:44,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:01:45,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051049007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:45,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:45,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 22 [2022-11-02 21:01:45,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530314321] [2022-11-02 21:01:45,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:01:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:45,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:01:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:01:45,415 INFO L87 Difference]: Start difference. First operand 8103 states and 11850 transitions. Second operand has 22 states, 22 states have (on average 11.0) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-02 21:02:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:01,371 INFO L93 Difference]: Finished difference Result 18422 states and 27399 transitions. [2022-11-02 21:02:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:02:01,372 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.0) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) Word has length 196 [2022-11-02 21:02:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:01,420 INFO L225 Difference]: With dead ends: 18422 [2022-11-02 21:02:01,420 INFO L226 Difference]: Without dead ends: 10343 [2022-11-02 21:02:01,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:02:01,445 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 7365 mSDsluCounter, 11625 mSDsCounter, 0 mSdLazyCounter, 10021 mSolverCounterSat, 4531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7462 SdHoareTripleChecker+Valid, 12943 SdHoareTripleChecker+Invalid, 14552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4531 IncrementalHoareTripleChecker+Valid, 10021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:01,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7462 Valid, 12943 Invalid, 14552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4531 Valid, 10021 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-02 21:02:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2022-11-02 21:02:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 7835. [2022-11-02 21:02:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 5809 states have (on average 1.340850404544672) internal successors, (7789), 5951 states have internal predecessors, (7789), 1492 states have call successors, (1492), 348 states have call predecessors, (1492), 533 states have return successors, (2145), 1615 states have call predecessors, (2145), 1489 states have call successors, (2145) [2022-11-02 21:02:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 11426 transitions. [2022-11-02 21:02:02,506 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 11426 transitions. Word has length 196 [2022-11-02 21:02:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:02,506 INFO L495 AbstractCegarLoop]: Abstraction has 7835 states and 11426 transitions. [2022-11-02 21:02:02,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.0) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-02 21:02:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 11426 transitions. [2022-11-02 21:02:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-02 21:02:02,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:02,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:02,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:02,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 332404550, now seen corresponding path program 2 times [2022-11-02 21:02:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:02,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454582246] [2022-11-02 21:02:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:02:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:02:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:02:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:02:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:02:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:02:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:02:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:02:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:02:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:02:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:02:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:02:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:02:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:02:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-02 21:02:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:03,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454582246] [2022-11-02 21:02:03,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454582246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:03,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386562622] [2022-11-02 21:02:03,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:02:03,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:03,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:03,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:03,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:02:04,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:02:04,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:02:04,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:02:04,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-02 21:02:04,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:02:05,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386562622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:05,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:02:05,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 8] total 28 [2022-11-02 21:02:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213372871] [2022-11-02 21:02:05,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:02:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:02:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:02:05,491 INFO L87 Difference]: Start difference. First operand 7835 states and 11426 transitions. Second operand has 28 states, 28 states have (on average 7.607142857142857) internal successors, (213), 18 states have internal predecessors, (213), 8 states have call successors, (48), 11 states have call predecessors, (48), 8 states have return successors, (41), 11 states have call predecessors, (41), 8 states have call successors, (41) [2022-11-02 21:02:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:30,185 INFO L93 Difference]: Finished difference Result 20970 states and 31863 transitions. [2022-11-02 21:02:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-02 21:02:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.607142857142857) internal successors, (213), 18 states have internal predecessors, (213), 8 states have call successors, (48), 11 states have call predecessors, (48), 8 states have return successors, (41), 11 states have call predecessors, (41), 8 states have call successors, (41) Word has length 196 [2022-11-02 21:02:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:30,231 INFO L225 Difference]: With dead ends: 20970 [2022-11-02 21:02:30,231 INFO L226 Difference]: Without dead ends: 13155 [2022-11-02 21:02:30,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=549, Invalid=3741, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 21:02:30,258 INFO L413 NwaCegarLoop]: 1894 mSDtfsCounter, 7450 mSDsluCounter, 24469 mSDsCounter, 0 mSdLazyCounter, 19653 mSolverCounterSat, 4304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7582 SdHoareTripleChecker+Valid, 26363 SdHoareTripleChecker+Invalid, 23957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4304 IncrementalHoareTripleChecker+Valid, 19653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:30,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7582 Valid, 26363 Invalid, 23957 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4304 Valid, 19653 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-11-02 21:02:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13155 states. [2022-11-02 21:02:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13155 to 7808. [2022-11-02 21:02:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7808 states, 5790 states have (on average 1.3398963730569948) internal successors, (7758), 5932 states have internal predecessors, (7758), 1484 states have call successors, (1484), 348 states have call predecessors, (1484), 533 states have return successors, (2137), 1607 states have call predecessors, (2137), 1481 states have call successors, (2137) [2022-11-02 21:02:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7808 states to 7808 states and 11379 transitions. [2022-11-02 21:02:31,669 INFO L78 Accepts]: Start accepts. Automaton has 7808 states and 11379 transitions. Word has length 196 [2022-11-02 21:02:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:31,669 INFO L495 AbstractCegarLoop]: Abstraction has 7808 states and 11379 transitions. [2022-11-02 21:02:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.607142857142857) internal successors, (213), 18 states have internal predecessors, (213), 8 states have call successors, (48), 11 states have call predecessors, (48), 8 states have return successors, (41), 11 states have call predecessors, (41), 8 states have call successors, (41) [2022-11-02 21:02:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7808 states and 11379 transitions. [2022-11-02 21:02:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 21:02:31,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:31,681 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:02:31,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:02:31,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1947241965, now seen corresponding path program 1 times [2022-11-02 21:02:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:31,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903569512] [2022-11-02 21:02:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:02:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:02:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:02:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:02:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:02:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:02:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 21:02:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:02:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:02:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 21:02:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-02 21:02:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-02 21:02:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 21:02:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:32,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903569512] [2022-11-02 21:02:32,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903569512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:32,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462154245] [2022-11-02 21:02:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:32,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:32,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:32,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:02:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:33,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 3192 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:33,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-02 21:02:33,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:33,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462154245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:33,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:02:33,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-02 21:02:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54104252] [2022-11-02 21:02:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:33,801 INFO L87 Difference]: Start difference. First operand 7808 states and 11379 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:02:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:36,746 INFO L93 Difference]: Finished difference Result 23379 states and 34088 transitions. [2022-11-02 21:02:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 200 [2022-11-02 21:02:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:36,805 INFO L225 Difference]: With dead ends: 23379 [2022-11-02 21:02:36,805 INFO L226 Difference]: Without dead ends: 23362 [2022-11-02 21:02:36,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:36,814 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 2108 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:36,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 4453 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23362 states. [2022-11-02 21:02:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23362 to 23324. [2022-11-02 21:02:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23324 states, 17290 states have (on average 1.340775014459225) internal successors, (23182), 17728 states have internal predecessors, (23182), 4440 states have call successors, (4440), 1036 states have call predecessors, (4440), 1593 states have return successors, (6405), 4799 states have call predecessors, (6405), 4437 states have call successors, (6405) [2022-11-02 21:02:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23324 states to 23324 states and 34027 transitions. [2022-11-02 21:02:39,725 INFO L78 Accepts]: Start accepts. Automaton has 23324 states and 34027 transitions. Word has length 200 [2022-11-02 21:02:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:39,726 INFO L495 AbstractCegarLoop]: Abstraction has 23324 states and 34027 transitions. [2022-11-02 21:02:39,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:02:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 23324 states and 34027 transitions. [2022-11-02 21:02:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 21:02:39,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:39,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:02:39,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:02:39,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1336608081, now seen corresponding path program 1 times [2022-11-02 21:02:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:39,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975431771] [2022-11-02 21:02:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:02:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:02:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:02:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:02:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:02:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:02:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 21:02:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:02:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:02:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 21:02:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-02 21:02:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-02 21:02:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 21:02:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:40,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975431771] [2022-11-02 21:02:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975431771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:40,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:40,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:02:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485384054] [2022-11-02 21:02:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:40,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:02:40,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:02:40,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:02:40,550 INFO L87 Difference]: Start difference. First operand 23324 states and 34027 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-02 21:02:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:56,871 INFO L93 Difference]: Finished difference Result 84683 states and 126398 transitions. [2022-11-02 21:02:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:02:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 200 [2022-11-02 21:02:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:57,248 INFO L225 Difference]: With dead ends: 84683 [2022-11-02 21:02:57,248 INFO L226 Difference]: Without dead ends: 61384 [2022-11-02 21:02:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:02:57,323 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 5691 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 3472 mSolverCounterSat, 3663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5791 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 7135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:57,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5791 Valid, 4955 Invalid, 7135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3663 Valid, 3472 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-02 21:02:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61384 states. [2022-11-02 21:03:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61384 to 22272. [2022-11-02 21:03:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22272 states, 16490 states have (on average 1.3434808975136445) internal successors, (22154), 16892 states have internal predecessors, (22154), 4344 states have call successors, (4344), 1036 states have call predecessors, (4344), 1437 states have return successors, (5709), 4607 states have call predecessors, (5709), 4341 states have call successors, (5709) [2022-11-02 21:03:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22272 states to 22272 states and 32207 transitions. [2022-11-02 21:03:01,719 INFO L78 Accepts]: Start accepts. Automaton has 22272 states and 32207 transitions. Word has length 200 [2022-11-02 21:03:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 22272 states and 32207 transitions. [2022-11-02 21:03:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-02 21:03:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 22272 states and 32207 transitions. [2022-11-02 21:03:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 21:03:01,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:01,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:03:01,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1878363111, now seen corresponding path program 1 times [2022-11-02 21:03:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:01,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546589725] [2022-11-02 21:03:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:03:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:03:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:03:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:03:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:03:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:03:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 21:03:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:03:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:03:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-02 21:03:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:03:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:03:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:03:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:03:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-02 21:03:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:02,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546589725] [2022-11-02 21:03:02,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546589725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:02,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785187303] [2022-11-02 21:03:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:02,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:02,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:02,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:02,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:03:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:03,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:03,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-02 21:03:03,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-02 21:03:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785187303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:04,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:04,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-11-02 21:03:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129450080] [2022-11-02 21:03:04,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:04,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:03:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:03:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:03:04,215 INFO L87 Difference]: Start difference. First operand 22272 states and 32207 transitions. Second operand has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 13 states have internal predecessors, (185), 2 states have call successors, (55), 10 states have call predecessors, (55), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-02 21:03:15,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:15,956 INFO L93 Difference]: Finished difference Result 50493 states and 74119 transitions. [2022-11-02 21:03:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:15,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 13 states have internal predecessors, (185), 2 states have call successors, (55), 10 states have call predecessors, (55), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 210 [2022-11-02 21:03:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:16,039 INFO L225 Difference]: With dead ends: 50493 [2022-11-02 21:03:16,039 INFO L226 Difference]: Without dead ends: 28240 [2022-11-02 21:03:16,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:03:16,092 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 2321 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 5166 mSolverCounterSat, 1624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 8865 SdHoareTripleChecker+Invalid, 6790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1624 IncrementalHoareTripleChecker+Valid, 5166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:16,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 8865 Invalid, 6790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1624 Valid, 5166 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-02 21:03:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28240 states. [2022-11-02 21:03:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28240 to 22274. [2022-11-02 21:03:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22274 states, 16492 states have (on average 1.343439243269464) internal successors, (22156), 16894 states have internal predecessors, (22156), 4344 states have call successors, (4344), 1036 states have call predecessors, (4344), 1437 states have return successors, (5709), 4607 states have call predecessors, (5709), 4341 states have call successors, (5709) [2022-11-02 21:03:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 32209 transitions. [2022-11-02 21:03:19,666 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 32209 transitions. Word has length 210 [2022-11-02 21:03:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:19,666 INFO L495 AbstractCegarLoop]: Abstraction has 22274 states and 32209 transitions. [2022-11-02 21:03:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 13 states have internal predecessors, (185), 2 states have call successors, (55), 10 states have call predecessors, (55), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-02 21:03:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 32209 transitions. [2022-11-02 21:03:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-02 21:03:19,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:19,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:19,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:19,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9ac2f-5457-4315-959a-69ccdaa809ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:19,878 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1833483783, now seen corresponding path program 2 times [2022-11-02 21:03:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:19,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401627036] [2022-11-02 21:03:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat