./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro --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 bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- 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-8393723 [2022-11-18 20:01:04,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:01:04,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:01:04,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:01:04,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:01:04,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:01:04,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:01:04,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:01:04,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:01:04,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:01:04,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:01:04,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:01:04,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:01:04,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:01:04,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:01:04,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:01:04,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:01:04,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:01:04,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:01:04,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:01:04,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:01:04,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:01:04,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:01:04,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:01:04,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:01:04,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:01:04,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:01:04,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:01:04,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:01:04,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:01:04,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:01:04,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:01:04,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:01:04,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:01:04,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:01:04,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:01:04,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:01:04,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:01:04,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:01:04,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:01:04,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:01:04,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:01:04,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:01:04,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:01:04,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:01:04,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:01:04,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:01:04,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:01:04,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:01:04,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:01:04,885 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:01:04,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:01:04,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:01:04,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:01:04,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:01:04,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:01:04,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:01:04,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:01:04,887 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:01:04,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:01:04,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:01:04,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:01:04,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:01:04,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:04,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:01:04,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:01:04,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:01:04,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:01:04,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:01:04,890 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:01:04,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:01:04,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:01:04,890 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_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2022-11-18 20:01:05,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:01:05,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:01:05,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:01:05,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:01:05,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:01:05,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-18 20:01:05,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/data/ed8b7f1bf/16493051a6654692b2dfc04b0697ea79/FLAG96597030c [2022-11-18 20:01:06,350 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:01:06,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-18 20:01:06,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/data/ed8b7f1bf/16493051a6654692b2dfc04b0697ea79/FLAG96597030c [2022-11-18 20:01:06,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/data/ed8b7f1bf/16493051a6654692b2dfc04b0697ea79 [2022-11-18 20:01:06,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:01:06,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:01:06,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:06,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:01:06,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:01:06,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:06" (1/1) ... [2022-11-18 20:01:06,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f92cfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:06, skipping insertion in model container [2022-11-18 20:01:06,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:06" (1/1) ... [2022-11-18 20:01:06,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:01:06,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:01:09,720 WARN L234 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_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-11-18 20:01:09,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:09,840 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:01:10,294 WARN L234 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_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-11-18 20:01:10,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:10,547 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:01:10,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10 WrapperNode [2022-11-18 20:01:10,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:10,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:10,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:01:10,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:01:10,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:10,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:10,978 INFO L138 Inliner]: procedures = 409, calls = 2615, calls flagged for inlining = 208, calls inlined = 189, statements flattened = 5790 [2022-11-18 20:01:10,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:10,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:01:10,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:01:10,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:01:10,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:10,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:01:11,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:01:11,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:01:11,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:01:11,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (1/1) ... [2022-11-18 20:01:11,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:11,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:01:11,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:01:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-11-18 20:01:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-11-18 20:01:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-18 20:01:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-18 20:01:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-18 20:01:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-18 20:01:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-18 20:01:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-18 20:01:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_state_machine_work [2022-11-18 20:01:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_state_machine_work [2022-11-18 20:01:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-18 20:01:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-18 20:01:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-18 20:01:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-18 20:01:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:01:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:01:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-18 20:01:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-18 20:01:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-18 20:01:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-18 20:01:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-11-18 20:01:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-11-18 20:01:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-18 20:01:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-18 20:01:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-11-18 20:01:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-11-18 20:01:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-18 20:01:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-18 20:01:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 20:01:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 20:01:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-11-18 20:01:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-11-18 20:01:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-11-18 20:01:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-11-18 20:01:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-18 20:01:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-18 20:01:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 20:01:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 20:01:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-18 20:01:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-18 20:01:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_set_mac_address [2022-11-18 20:01:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_set_mac_address [2022-11-18 20:01:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-11-18 20:01:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-11-18 20:01:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-11-18 20:01:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-11-18 20:01:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-18 20:01:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-18 20:01:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-18 20:01:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-18 20:01:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-18 20:01:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-18 20:01:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-11-18 20:01:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-11-18 20:01:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 20:01:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 20:01:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-18 20:01:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-18 20:01:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:01:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-18 20:01:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-18 20:01:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-11-18 20:01:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-11-18 20:01:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-11-18 20:01:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-11-18 20:01:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-18 20:01:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-18 20:01:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-18 20:01:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-18 20:01:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-18 20:01:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-18 20:01:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 20:01:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-18 20:01:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-18 20:01:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-18 20:01:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-18 20:01:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 20:01:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_5 [2022-11-18 20:01:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_5 [2022-11-18 20:01:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-11-18 20:01:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-11-18 20:01:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:01:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-18 20:01:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-18 20:01:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 20:01:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 20:01:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-18 20:01:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-18 20:01:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-18 20:01:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-18 20:01:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-18 20:01:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-18 20:01:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-11-18 20:01:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-11-18 20:01:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-18 20:01:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-18 20:01:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-11-18 20:01:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-11-18 20:01:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-11-18 20:01:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-11-18 20:01:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-18 20:01:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-18 20:01:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-11-18 20:01:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-11-18 20:01:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-11-18 20:01:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-11-18 20:01:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:01:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-11-18 20:01:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-11-18 20:01:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-11-18 20:01:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-11-18 20:01:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:01:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_5 [2022-11-18 20:01:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_5 [2022-11-18 20:01:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-11-18 20:01:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-11-18 20:01:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-18 20:01:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-18 20:01:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:01:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-11-18 20:01:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-11-18 20:01:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-11-18 20:01:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-11-18 20:01:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-18 20:01:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-18 20:01:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-11-18 20:01:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-11-18 20:01:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-18 20:01:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-18 20:01:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-18 20:01:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-18 20:01:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-11-18 20:01:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-11-18 20:01:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-18 20:01:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-18 20:01:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_timeout_work [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_timeout_work [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:01:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:01:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-18 20:01:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-18 20:01:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-18 20:01:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-11-18 20:01:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-11-18 20:01:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-18 20:01:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-18 20:01:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-18 20:01:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-18 20:01:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-11-18 20:01:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-11-18 20:01:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:01:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:01:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-18 20:01:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-18 20:01:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-18 20:01:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-18 20:01:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-11-18 20:01:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-11-18 20:01:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 20:01:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 20:01:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-11-18 20:01:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-11-18 20:01:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:01:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:01:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-18 20:01:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-18 20:01:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-18 20:01:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-18 20:01:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-18 20:01:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-18 20:01:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 20:01:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-18 20:01:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-18 20:01:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-18 20:01:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-18 20:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-18 20:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-18 20:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-18 20:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-18 20:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-18 20:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-18 20:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-18 20:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-18 20:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-11-18 20:01:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-11-18 20:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-18 20:01:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-18 20:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-11-18 20:01:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-11-18 20:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ql_reset_work [2022-11-18 20:01:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_reset_work [2022-11-18 20:01:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-18 20:01:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-18 20:01:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-11-18 20:01:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-11-18 20:01:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-11-18 20:01:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-11-18 20:01:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-18 20:01:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-18 20:01:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-18 20:01:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-18 20:01:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-11-18 20:01:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-11-18 20:01:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-18 20:01:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-18 20:01:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 20:01:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 20:01:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-11-18 20:01:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-11-18 20:01:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:01:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-18 20:01:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-18 20:01:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:01:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:01:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-11-18 20:01:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-11-18 20:01:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-11-18 20:01:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-11-18 20:01:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-18 20:01:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-18 20:01:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-11-18 20:01:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-11-18 20:01:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-18 20:01:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-18 20:01:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-18 20:01:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-18 20:01:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-11-18 20:01:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-11-18 20:01:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-11-18 20:01:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-11-18 20:01:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-18 20:01:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-18 20:01:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-18 20:01:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-18 20:01:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-18 20:01:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-18 20:01:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-18 20:01:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-18 20:01:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-18 20:01:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-18 20:01:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-18 20:01:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:01:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-11-18 20:01:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-11-18 20:01:12,508 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:01:12,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:01:12,932 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-18 20:01:18,369 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:01:18,401 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:01:18,401 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:01:18,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:18 BoogieIcfgContainer [2022-11-18 20:01:18,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:01:18,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:01:18,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:01:18,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:01:18,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:01:06" (1/3) ... [2022-11-18 20:01:18,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fd176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:18, skipping insertion in model container [2022-11-18 20:01:18,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:10" (2/3) ... [2022-11-18 20:01:18,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fd176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:18, skipping insertion in model container [2022-11-18 20:01:18,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:18" (3/3) ... [2022-11-18 20:01:18,425 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-18 20:01:18,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:01:18,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:01:18,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:01:18,566 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;@20fc4ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:01:18,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:01:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 2270 states, 1517 states have (on average 1.3045484508899143) internal successors, (1979), 1573 states have internal predecessors, (1979), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) [2022-11-18 20:01:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-18 20:01:18,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:18,638 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:01:18,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash 928695228, now seen corresponding path program 1 times [2022-11-18 20:01:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369788965] [2022-11-18 20:01:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:19,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369788965] [2022-11-18 20:01:19,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879774763] [2022-11-18 20:01:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:19,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:19,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:19,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:01:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:20,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:01:20,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-18 20:01:20,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:20,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879774763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:20,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:20,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508983320] [2022-11-18 20:01:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:01:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:01:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:01:20,863 INFO L87 Difference]: Start difference. First operand has 2270 states, 1517 states have (on average 1.3045484508899143) internal successors, (1979), 1573 states have internal predecessors, (1979), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:01:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:21,164 INFO L93 Difference]: Finished difference Result 4535 states and 6485 transitions. [2022-11-18 20:01:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:01:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 205 [2022-11-18 20:01:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:21,208 INFO L225 Difference]: With dead ends: 4535 [2022-11-18 20:01:21,208 INFO L226 Difference]: Without dead ends: 2244 [2022-11-18 20:01:21,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:01:21,234 INFO L413 NwaCegarLoop]: 3217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:21,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2022-11-18 20:01:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2022-11-18 20:01:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1503 states have (on average 1.2947438456420493) internal successors, (1946), 1547 states have internal predecessors, (1946), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-11-18 20:01:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3177 transitions. [2022-11-18 20:01:21,435 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3177 transitions. Word has length 205 [2022-11-18 20:01:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:21,436 INFO L495 AbstractCegarLoop]: Abstraction has 2244 states and 3177 transitions. [2022-11-18 20:01:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:01:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3177 transitions. [2022-11-18 20:01:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-18 20:01:21,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:21,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:01:21,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:21,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:01:21,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 813263152, now seen corresponding path program 1 times [2022-11-18 20:01:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903788193] [2022-11-18 20:01:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:21,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:21,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078965407] [2022-11-18 20:01:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:21,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:21,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:21,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:01:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:23,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:01:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-18 20:01:23,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:23,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:23,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903788193] [2022-11-18 20:01:23,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:23,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078965407] [2022-11-18 20:01:23,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078965407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:23,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:23,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:23,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278250245] [2022-11-18 20:01:23,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:23,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:23,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:23,352 INFO L87 Difference]: Start difference. First operand 2244 states and 3177 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:01:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:23,817 INFO L93 Difference]: Finished difference Result 6368 states and 9026 transitions. [2022-11-18 20:01:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 205 [2022-11-18 20:01:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:23,850 INFO L225 Difference]: With dead ends: 6368 [2022-11-18 20:01:23,851 INFO L226 Difference]: Without dead ends: 4151 [2022-11-18 20:01:23,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:23,867 INFO L413 NwaCegarLoop]: 3674 mSDtfsCounter, 2798 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 6674 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:23,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 6674 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2022-11-18 20:01:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 4135. [2022-11-18 20:01:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 2772 states have (on average 1.2947330447330447) internal successors, (3589), 2858 states have internal predecessors, (3589), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-18 20:01:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5850 transitions. [2022-11-18 20:01:24,146 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5850 transitions. Word has length 205 [2022-11-18 20:01:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:24,147 INFO L495 AbstractCegarLoop]: Abstraction has 4135 states and 5850 transitions. [2022-11-18 20:01:24,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:01:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5850 transitions. [2022-11-18 20:01:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-18 20:01:24,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:24,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:24,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:01:24,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1077332952, now seen corresponding path program 1 times [2022-11-18 20:01:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:24,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623864334] [2022-11-18 20:01:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:24,640 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:24,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874170058] [2022-11-18 20:01:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:24,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:24,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:24,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:24,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:01:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:26,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 4198 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:01:26,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-18 20:01:26,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:26,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:26,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623864334] [2022-11-18 20:01:26,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:26,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874170058] [2022-11-18 20:01:26,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874170058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:26,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:26,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820343829] [2022-11-18 20:01:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:26,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:26,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:26,164 INFO L87 Difference]: Start difference. First operand 4135 states and 5850 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 20:01:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:26,352 INFO L93 Difference]: Finished difference Result 8251 states and 11718 transitions. [2022-11-18 20:01:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 326 [2022-11-18 20:01:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:26,382 INFO L225 Difference]: With dead ends: 8251 [2022-11-18 20:01:26,383 INFO L226 Difference]: Without dead ends: 4143 [2022-11-18 20:01:26,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:26,408 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 2 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:26,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6349 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-11-18 20:01:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4137. [2022-11-18 20:01:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 2774 states have (on average 1.2945205479452055) internal successors, (3591), 2860 states have internal predecessors, (3591), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-18 20:01:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 5852 transitions. [2022-11-18 20:01:26,702 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 5852 transitions. Word has length 326 [2022-11-18 20:01:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:26,703 INFO L495 AbstractCegarLoop]: Abstraction has 4137 states and 5852 transitions. [2022-11-18 20:01:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 20:01:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 5852 transitions. [2022-11-18 20:01:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-18 20:01:26,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:26,719 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:26,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:26,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:26,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash 257392106, now seen corresponding path program 1 times [2022-11-18 20:01:26,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557589973] [2022-11-18 20:01:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:27,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557589973] [2022-11-18 20:01:27,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:27,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715194836] [2022-11-18 20:01:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:27,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:27,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:01:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:01:28,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-18 20:01:28,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:28,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715194836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:28,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:28,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905115182] [2022-11-18 20:01:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:28,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:28,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:28,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:28,684 INFO L87 Difference]: Start difference. First operand 4137 states and 5852 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-18 20:01:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:28,867 INFO L93 Difference]: Finished difference Result 8273 states and 11715 transitions. [2022-11-18 20:01:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 402 [2022-11-18 20:01:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:28,897 INFO L225 Difference]: With dead ends: 8273 [2022-11-18 20:01:28,898 INFO L226 Difference]: Without dead ends: 4163 [2022-11-18 20:01:28,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:28,923 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 11 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6348 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:28,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6348 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2022-11-18 20:01:29,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4139. [2022-11-18 20:01:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 2776 states have (on average 1.294308357348703) internal successors, (3593), 2862 states have internal predecessors, (3593), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-18 20:01:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 5854 transitions. [2022-11-18 20:01:29,111 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 5854 transitions. Word has length 402 [2022-11-18 20:01:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:29,112 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 5854 transitions. [2022-11-18 20:01:29,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-18 20:01:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 5854 transitions. [2022-11-18 20:01:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-18 20:01:29,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:29,128 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:29,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:29,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:29,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -113217063, now seen corresponding path program 1 times [2022-11-18 20:01:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:29,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810857102] [2022-11-18 20:01:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810857102] [2022-11-18 20:01:29,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970247358] [2022-11-18 20:01:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:29,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:29,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:29,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:01:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:31,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 4518 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:01:31,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-18 20:01:31,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-18 20:01:31,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970247358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:31,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:31,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 20:01:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180377752] [2022-11-18 20:01:31,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:31,672 INFO L87 Difference]: Start difference. First operand 4139 states and 5854 transitions. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 20:01:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:31,954 INFO L93 Difference]: Finished difference Result 8329 states and 11795 transitions. [2022-11-18 20:01:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 404 [2022-11-18 20:01:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:31,987 INFO L225 Difference]: With dead ends: 8329 [2022-11-18 20:01:31,988 INFO L226 Difference]: Without dead ends: 4217 [2022-11-18 20:01:32,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:32,011 INFO L413 NwaCegarLoop]: 3183 mSDtfsCounter, 60 mSDsluCounter, 6345 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 9528 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:32,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 9528 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2022-11-18 20:01:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 4217. [2022-11-18 20:01:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4217 states, 2836 states have (on average 1.2923131170662905) internal successors, (3665), 2922 states have internal predecessors, (3665), 1149 states have call successors, (1149), 232 states have call predecessors, (1149), 231 states have return successors, (1148), 1119 states have call predecessors, (1148), 1148 states have call successors, (1148) [2022-11-18 20:01:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4217 states to 4217 states and 5962 transitions. [2022-11-18 20:01:32,205 INFO L78 Accepts]: Start accepts. Automaton has 4217 states and 5962 transitions. Word has length 404 [2022-11-18 20:01:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:32,205 INFO L495 AbstractCegarLoop]: Abstraction has 4217 states and 5962 transitions. [2022-11-18 20:01:32,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 20:01:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4217 states and 5962 transitions. [2022-11-18 20:01:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-18 20:01:32,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:32,226 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:32,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:32,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:32,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1763451229, now seen corresponding path program 1 times [2022-11-18 20:01:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:32,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659332175] [2022-11-18 20:01:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659332175] [2022-11-18 20:01:32,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797297005] [2022-11-18 20:01:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:32,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:32,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:01:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:34,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 4542 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:01:34,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-18 20:01:34,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-18 20:01:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797297005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:34,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 20:01:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896305606] [2022-11-18 20:01:34,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:01:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:01:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:01:34,814 INFO L87 Difference]: Start difference. First operand 4217 states and 5962 transitions. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-18 20:01:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:35,194 INFO L93 Difference]: Finished difference Result 8563 states and 12125 transitions. [2022-11-18 20:01:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:01:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 413 [2022-11-18 20:01:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:35,229 INFO L225 Difference]: With dead ends: 8563 [2022-11-18 20:01:35,230 INFO L226 Difference]: Without dead ends: 4373 [2022-11-18 20:01:35,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:01:35,253 INFO L413 NwaCegarLoop]: 3201 mSDtfsCounter, 172 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 9618 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:35,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 9618 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2022-11-18 20:01:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2022-11-18 20:01:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 2956 states have (on average 1.2885656292286873) internal successors, (3809), 3042 states have internal predecessors, (3809), 1185 states have call successors, (1185), 232 states have call predecessors, (1185), 231 states have return successors, (1184), 1155 states have call predecessors, (1184), 1184 states have call successors, (1184) [2022-11-18 20:01:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6178 transitions. [2022-11-18 20:01:35,453 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6178 transitions. Word has length 413 [2022-11-18 20:01:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:35,454 INFO L495 AbstractCegarLoop]: Abstraction has 4373 states and 6178 transitions. [2022-11-18 20:01:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-18 20:01:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6178 transitions. [2022-11-18 20:01:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-18 20:01:35,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:35,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:35,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:35,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:01:35,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash 38028644, now seen corresponding path program 1 times [2022-11-18 20:01:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503917803] [2022-11-18 20:01:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:35,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:35,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507359900] [2022-11-18 20:01:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:35,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:35,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:35,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:35,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:01:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:37,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 4236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:01:37,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-18 20:01:37,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:37,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503917803] [2022-11-18 20:01:37,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507359900] [2022-11-18 20:01:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507359900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:37,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:01:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553694922] [2022-11-18 20:01:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:37,554 INFO L87 Difference]: Start difference. First operand 4373 states and 6178 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-18 20:01:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:38,056 INFO L93 Difference]: Finished difference Result 8801 states and 12473 transitions. [2022-11-18 20:01:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:38,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) Word has length 333 [2022-11-18 20:01:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:38,115 INFO L225 Difference]: With dead ends: 8801 [2022-11-18 20:01:38,116 INFO L226 Difference]: Without dead ends: 4455 [2022-11-18 20:01:38,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:38,144 INFO L413 NwaCegarLoop]: 3184 mSDtfsCounter, 101 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 15757 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:38,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 15757 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2022-11-18 20:01:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4455. [2022-11-18 20:01:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 3004 states have (on average 1.2872836218375499) internal successors, (3867), 3090 states have internal predecessors, (3867), 1215 states have call successors, (1215), 234 states have call predecessors, (1215), 235 states have return successors, (1216), 1185 states have call predecessors, (1216), 1214 states have call successors, (1216) [2022-11-18 20:01:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 6298 transitions. [2022-11-18 20:01:38,406 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 6298 transitions. Word has length 333 [2022-11-18 20:01:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:38,407 INFO L495 AbstractCegarLoop]: Abstraction has 4455 states and 6298 transitions. [2022-11-18 20:01:38,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-18 20:01:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 6298 transitions. [2022-11-18 20:01:38,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-18 20:01:38,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:38,423 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:38,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:38,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1775207103, now seen corresponding path program 1 times [2022-11-18 20:01:38,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:38,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129467249] [2022-11-18 20:01:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:38,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:38,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84152893] [2022-11-18 20:01:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:38,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:38,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:38,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:01:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:40,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 4384 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:01:40,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-18 20:01:40,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:40,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129467249] [2022-11-18 20:01:40,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:40,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84152893] [2022-11-18 20:01:40,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84152893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:40,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:40,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:40,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227396530] [2022-11-18 20:01:40,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:40,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:40,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:40,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:40,441 INFO L87 Difference]: Start difference. First operand 4455 states and 6298 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-18 20:01:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:40,685 INFO L93 Difference]: Finished difference Result 8993 states and 12776 transitions. [2022-11-18 20:01:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:40,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) Word has length 366 [2022-11-18 20:01:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:40,719 INFO L225 Difference]: With dead ends: 8993 [2022-11-18 20:01:40,719 INFO L226 Difference]: Without dead ends: 4565 [2022-11-18 20:01:40,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:40,743 INFO L413 NwaCegarLoop]: 3220 mSDtfsCounter, 42 mSDsluCounter, 9619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 12839 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:40,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 12839 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2022-11-18 20:01:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4463. [2022-11-18 20:01:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3010 states have (on average 1.2867109634551495) internal successors, (3873), 3096 states have internal predecessors, (3873), 1215 states have call successors, (1215), 234 states have call predecessors, (1215), 237 states have return successors, (1220), 1187 states have call predecessors, (1220), 1214 states have call successors, (1220) [2022-11-18 20:01:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6308 transitions. [2022-11-18 20:01:41,009 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6308 transitions. Word has length 366 [2022-11-18 20:01:41,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:41,010 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 6308 transitions. [2022-11-18 20:01:41,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-18 20:01:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6308 transitions. [2022-11-18 20:01:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-18 20:01:41,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:41,026 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:41,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:41,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 545509584, now seen corresponding path program 1 times [2022-11-18 20:01:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:41,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280018673] [2022-11-18 20:01:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280018673] [2022-11-18 20:01:41,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031623810] [2022-11-18 20:01:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:41,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:41,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:01:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 4637 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:01:43,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 24 proven. 190 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-18 20:01:43,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-18 20:01:43,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031623810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:43,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:43,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-18 20:01:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002333714] [2022-11-18 20:01:43,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:01:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:01:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:01:43,867 INFO L87 Difference]: Start difference. First operand 4463 states and 6308 transitions. Second operand has 24 states, 24 states have (on average 14.208333333333334) internal successors, (341), 24 states have internal predecessors, (341), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 20:01:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:44,519 INFO L93 Difference]: Finished difference Result 9211 states and 13045 transitions. [2022-11-18 20:01:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:01:44,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.208333333333334) internal successors, (341), 24 states have internal predecessors, (341), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 441 [2022-11-18 20:01:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:44,553 INFO L225 Difference]: With dead ends: 9211 [2022-11-18 20:01:44,553 INFO L226 Difference]: Without dead ends: 4775 [2022-11-18 20:01:44,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:01:44,577 INFO L413 NwaCegarLoop]: 3237 mSDtfsCounter, 348 mSDsluCounter, 9739 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 12976 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:44,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 12976 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:01:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2022-11-18 20:01:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4775. [2022-11-18 20:01:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 3250 states have (on average 1.2803076923076924) internal successors, (4161), 3336 states have internal predecessors, (4161), 1287 states have call successors, (1287), 234 states have call predecessors, (1287), 237 states have return successors, (1292), 1259 states have call predecessors, (1292), 1286 states have call successors, (1292) [2022-11-18 20:01:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6740 transitions. [2022-11-18 20:01:44,793 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6740 transitions. Word has length 441 [2022-11-18 20:01:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:44,795 INFO L495 AbstractCegarLoop]: Abstraction has 4775 states and 6740 transitions. [2022-11-18 20:01:44,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.208333333333334) internal successors, (341), 24 states have internal predecessors, (341), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 20:01:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6740 transitions. [2022-11-18 20:01:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-18 20:01:44,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:44,812 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:44,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:45,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 198492668, now seen corresponding path program 1 times [2022-11-18 20:01:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:45,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815582756] [2022-11-18 20:01:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:45,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:45,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465939376] [2022-11-18 20:01:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:45,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:45,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:45,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:01:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:46,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 4404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:01:46,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-18 20:01:46,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:46,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815582756] [2022-11-18 20:01:46,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:46,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465939376] [2022-11-18 20:01:46,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465939376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:46,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:46,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304206390] [2022-11-18 20:01:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:46,841 INFO L87 Difference]: Start difference. First operand 4775 states and 6740 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-18 20:01:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:47,059 INFO L93 Difference]: Finished difference Result 9565 states and 13554 transitions. [2022-11-18 20:01:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 376 [2022-11-18 20:01:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:47,089 INFO L225 Difference]: With dead ends: 9565 [2022-11-18 20:01:47,089 INFO L226 Difference]: Without dead ends: 4817 [2022-11-18 20:01:47,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:47,115 INFO L413 NwaCegarLoop]: 3181 mSDtfsCounter, 15 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6360 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:47,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6360 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2022-11-18 20:01:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4793. [2022-11-18 20:01:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 3262 states have (on average 1.279889638258737) internal successors, (4175), 3348 states have internal predecessors, (4175), 1293 states have call successors, (1293), 234 states have call predecessors, (1293), 237 states have return successors, (1298), 1265 states have call predecessors, (1298), 1292 states have call successors, (1298) [2022-11-18 20:01:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 6766 transitions. [2022-11-18 20:01:47,325 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 6766 transitions. Word has length 376 [2022-11-18 20:01:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:47,326 INFO L495 AbstractCegarLoop]: Abstraction has 4793 states and 6766 transitions. [2022-11-18 20:01:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-18 20:01:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 6766 transitions. [2022-11-18 20:01:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-11-18 20:01:47,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:47,343 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:47,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:47,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:47,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 332805696, now seen corresponding path program 1 times [2022-11-18 20:01:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037330623] [2022-11-18 20:01:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:47,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:47,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037330623] [2022-11-18 20:01:47,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:47,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409140866] [2022-11-18 20:01:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:47,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:47,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:47,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:01:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 5028 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:01:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 21 proven. 946 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-18 20:01:50,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2022-11-18 20:01:51,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409140866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:51,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:51,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-18 20:01:51,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212430437] [2022-11-18 20:01:51,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:51,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:01:51,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:01:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:01:51,596 INFO L87 Difference]: Start difference. First operand 4793 states and 6766 transitions. Second operand has 48 states, 48 states have (on average 9.75) internal successors, (468), 48 states have internal predecessors, (468), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2022-11-18 20:01:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:53,116 INFO L93 Difference]: Finished difference Result 10183 states and 14417 transitions. [2022-11-18 20:01:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:01:53,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 9.75) internal successors, (468), 48 states have internal predecessors, (468), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 551 [2022-11-18 20:01:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:53,151 INFO L225 Difference]: With dead ends: 10183 [2022-11-18 20:01:53,151 INFO L226 Difference]: Without dead ends: 5417 [2022-11-18 20:01:53,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:01:53,176 INFO L413 NwaCegarLoop]: 3309 mSDtfsCounter, 735 mSDsluCounter, 35349 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 38658 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:53,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 38658 Invalid, 1035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [226 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:01:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2022-11-18 20:01:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5417. [2022-11-18 20:01:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 3742 states have (on average 1.269641902725815) internal successors, (4751), 3828 states have internal predecessors, (4751), 1437 states have call successors, (1437), 234 states have call predecessors, (1437), 237 states have return successors, (1442), 1409 states have call predecessors, (1442), 1436 states have call successors, (1442) [2022-11-18 20:01:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 7630 transitions. [2022-11-18 20:01:53,391 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 7630 transitions. Word has length 551 [2022-11-18 20:01:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:53,392 INFO L495 AbstractCegarLoop]: Abstraction has 5417 states and 7630 transitions. [2022-11-18 20:01:53,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 9.75) internal successors, (468), 48 states have internal predecessors, (468), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2022-11-18 20:01:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 7630 transitions. [2022-11-18 20:01:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-18 20:01:53,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:53,504 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:53,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:01:53,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:53,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 844845203, now seen corresponding path program 1 times [2022-11-18 20:01:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:53,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343042117] [2022-11-18 20:01:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:53,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:53,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124263583] [2022-11-18 20:01:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:53,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:53,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:01:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:55,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 4486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:01:55,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-18 20:01:55,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-18 20:01:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343042117] [2022-11-18 20:01:56,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124263583] [2022-11-18 20:01:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124263583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:56,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:56,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:01:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697082927] [2022-11-18 20:01:56,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:56,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:56,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:56,164 INFO L87 Difference]: Start difference. First operand 5417 states and 7630 transitions. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 6 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2022-11-18 20:01:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:56,480 INFO L93 Difference]: Finished difference Result 10899 states and 15412 transitions. [2022-11-18 20:01:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:56,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 6 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) Word has length 398 [2022-11-18 20:01:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:56,514 INFO L225 Difference]: With dead ends: 10899 [2022-11-18 20:01:56,515 INFO L226 Difference]: Without dead ends: 5509 [2022-11-18 20:01:56,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:56,547 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 47 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 15877 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:56,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 15877 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2022-11-18 20:01:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 5489. [2022-11-18 20:01:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 3790 states have (on average 1.2683377308707124) internal successors, (4807), 3876 states have internal predecessors, (4807), 1461 states have call successors, (1461), 234 states have call predecessors, (1461), 237 states have return successors, (1466), 1433 states have call predecessors, (1466), 1460 states have call successors, (1466) [2022-11-18 20:01:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 7734 transitions. [2022-11-18 20:01:56,791 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 7734 transitions. Word has length 398 [2022-11-18 20:01:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:56,792 INFO L495 AbstractCegarLoop]: Abstraction has 5489 states and 7734 transitions. [2022-11-18 20:01:56,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 6 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2022-11-18 20:01:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 7734 transitions. [2022-11-18 20:01:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-18 20:01:56,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:56,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:56,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:57,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:01:57,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash -193231022, now seen corresponding path program 1 times [2022-11-18 20:01:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890837756] [2022-11-18 20:01:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890837756] [2022-11-18 20:01:57,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059844427] [2022-11-18 20:01:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:57,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:57,337 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:01:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 4621 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:01:59,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-18 20:01:59,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:59,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059844427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:59,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:59,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677495347] [2022-11-18 20:01:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:59,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:01:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:01:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:59,154 INFO L87 Difference]: Start difference. First operand 5489 states and 7734 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-18 20:01:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:59,369 INFO L93 Difference]: Finished difference Result 11035 states and 15606 transitions. [2022-11-18 20:01:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 424 [2022-11-18 20:01:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:59,409 INFO L225 Difference]: With dead ends: 11035 [2022-11-18 20:01:59,409 INFO L226 Difference]: Without dead ends: 5573 [2022-11-18 20:01:59,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:01:59,441 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 25 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:59,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6384 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2022-11-18 20:01:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5513. [2022-11-18 20:01:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 3806 states have (on average 1.26878612716763) internal successors, (4829), 3894 states have internal predecessors, (4829), 1469 states have call successors, (1469), 234 states have call predecessors, (1469), 237 states have return successors, (1474), 1441 states have call predecessors, (1474), 1468 states have call successors, (1474) [2022-11-18 20:01:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 7772 transitions. [2022-11-18 20:01:59,662 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 7772 transitions. Word has length 424 [2022-11-18 20:01:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:59,663 INFO L495 AbstractCegarLoop]: Abstraction has 5513 states and 7772 transitions. [2022-11-18 20:01:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-18 20:01:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 7772 transitions. [2022-11-18 20:01:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-18 20:01:59,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:59,679 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:59,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:01:59,894 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 233323476, now seen corresponding path program 1 times [2022-11-18 20:01:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:59,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037321596] [2022-11-18 20:01:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:00,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037321596] [2022-11-18 20:02:00,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:00,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594738210] [2022-11-18 20:02:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:00,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:00,149 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:00,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:02:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 4618 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:01,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-18 20:02:01,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-18 20:02:02,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594738210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:02,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:02,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 20:02:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311849555] [2022-11-18 20:02:02,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:02:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:02:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:02:02,449 INFO L87 Difference]: Start difference. First operand 5513 states and 7772 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-18 20:02:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:02,685 INFO L93 Difference]: Finished difference Result 11023 states and 15594 transitions. [2022-11-18 20:02:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:02:02,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) Word has length 424 [2022-11-18 20:02:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:02,721 INFO L225 Difference]: With dead ends: 11023 [2022-11-18 20:02:02,722 INFO L226 Difference]: Without dead ends: 5537 [2022-11-18 20:02:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:02:02,752 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 12 mSDsluCounter, 6345 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9523 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9523 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:02:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2022-11-18 20:02:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 5537. [2022-11-18 20:02:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 3824 states have (on average 1.267520920502092) internal successors, (4847), 3912 states have internal predecessors, (4847), 1475 states have call successors, (1475), 234 states have call predecessors, (1475), 237 states have return successors, (1480), 1447 states have call predecessors, (1480), 1474 states have call successors, (1480) [2022-11-18 20:02:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 7802 transitions. [2022-11-18 20:02:03,139 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 7802 transitions. Word has length 424 [2022-11-18 20:02:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:03,140 INFO L495 AbstractCegarLoop]: Abstraction has 5537 states and 7802 transitions. [2022-11-18 20:02:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-18 20:02:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 7802 transitions. [2022-11-18 20:02:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-18 20:02:03,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:03,157 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:03,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:03,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:02:03,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -940396440, now seen corresponding path program 2 times [2022-11-18 20:02:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:03,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12416224] [2022-11-18 20:02:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12416224] [2022-11-18 20:02:03,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681532216] [2022-11-18 20:02:03,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:02:03,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:03,641 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:03,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:02:05,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:02:05,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:05,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:05,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-11-18 20:02:05,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:05,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681532216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:05,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:05,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:02:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968182068] [2022-11-18 20:02:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:05,280 INFO L87 Difference]: Start difference. First operand 5537 states and 7802 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2022-11-18 20:02:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:05,823 INFO L93 Difference]: Finished difference Result 11565 states and 16410 transitions. [2022-11-18 20:02:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 445 [2022-11-18 20:02:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:05,857 INFO L225 Difference]: With dead ends: 11565 [2022-11-18 20:02:05,858 INFO L226 Difference]: Without dead ends: 6055 [2022-11-18 20:02:05,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:02:05,889 INFO L413 NwaCegarLoop]: 3572 mSDtfsCounter, 375 mSDsluCounter, 6558 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 10130 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:05,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 10130 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:02:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2022-11-18 20:02:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 5541. [2022-11-18 20:02:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 3828 states have (on average 1.2672413793103448) internal successors, (4851), 3916 states have internal predecessors, (4851), 1475 states have call successors, (1475), 234 states have call predecessors, (1475), 237 states have return successors, (1480), 1447 states have call predecessors, (1480), 1474 states have call successors, (1480) [2022-11-18 20:02:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 7806 transitions. [2022-11-18 20:02:06,137 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 7806 transitions. Word has length 445 [2022-11-18 20:02:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:06,138 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 7806 transitions. [2022-11-18 20:02:06,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2022-11-18 20:02:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 7806 transitions. [2022-11-18 20:02:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-18 20:02:06,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:06,156 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:06,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:02:06,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1667408972, now seen corresponding path program 1 times [2022-11-18 20:02:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775332037] [2022-11-18 20:02:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:06,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775332037] [2022-11-18 20:02:06,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463346591] [2022-11-18 20:02:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:06,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:06,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:06,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:02:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:08,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 4788 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:02:08,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-18 20:02:08,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-18 20:02:09,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463346591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:09,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:09,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 20:02:09,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443528222] [2022-11-18 20:02:09,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:09,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:02:09,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:09,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:02:09,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:02:09,184 INFO L87 Difference]: Start difference. First operand 5541 states and 7806 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) [2022-11-18 20:02:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:09,483 INFO L93 Difference]: Finished difference Result 11103 states and 15698 transitions. [2022-11-18 20:02:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:02:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) Word has length 451 [2022-11-18 20:02:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:09,512 INFO L225 Difference]: With dead ends: 11103 [2022-11-18 20:02:09,512 INFO L226 Difference]: Without dead ends: 5589 [2022-11-18 20:02:09,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:02:09,540 INFO L413 NwaCegarLoop]: 3184 mSDtfsCounter, 30 mSDsluCounter, 12693 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15877 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:09,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15877 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2022-11-18 20:02:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 5589. [2022-11-18 20:02:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5589 states, 3864 states have (on average 1.264751552795031) internal successors, (4887), 3952 states have internal predecessors, (4887), 1487 states have call successors, (1487), 234 states have call predecessors, (1487), 237 states have return successors, (1492), 1459 states have call predecessors, (1492), 1486 states have call successors, (1492) [2022-11-18 20:02:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 7866 transitions. [2022-11-18 20:02:09,754 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 7866 transitions. Word has length 451 [2022-11-18 20:02:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:09,754 INFO L495 AbstractCegarLoop]: Abstraction has 5589 states and 7866 transitions. [2022-11-18 20:02:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) [2022-11-18 20:02:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 7866 transitions. [2022-11-18 20:02:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-11-18 20:02:09,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:09,771 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:09,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:09,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:09,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1990684620, now seen corresponding path program 2 times [2022-11-18 20:02:09,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:09,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290171542] [2022-11-18 20:02:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:09,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:10,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290171542] [2022-11-18 20:02:10,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:10,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908203408] [2022-11-18 20:02:10,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:02:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:10,269 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:10,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:02:11,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:02:11,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2022-11-18 20:02:11,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:11,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908203408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:11,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:11,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263435296] [2022-11-18 20:02:11,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:11,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:11,907 INFO L87 Difference]: Start difference. First operand 5589 states and 7866 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 20:02:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:12,498 INFO L93 Difference]: Finished difference Result 16667 states and 23509 transitions. [2022-11-18 20:02:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 493 [2022-11-18 20:02:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:12,567 INFO L225 Difference]: With dead ends: 16667 [2022-11-18 20:02:12,568 INFO L226 Difference]: Without dead ends: 11105 [2022-11-18 20:02:12,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:12,603 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 3125 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3125 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:12,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3125 Valid, 6934 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2022-11-18 20:02:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 11102. [2022-11-18 20:02:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11102 states, 7674 states have (on average 1.2650508209538702) internal successors, (9708), 7855 states have internal predecessors, (9708), 2959 states have call successors, (2959), 466 states have call predecessors, (2959), 468 states have return successors, (2978), 2894 states have call predecessors, (2978), 2958 states have call successors, (2978) [2022-11-18 20:02:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11102 states to 11102 states and 15645 transitions. [2022-11-18 20:02:13,201 INFO L78 Accepts]: Start accepts. Automaton has 11102 states and 15645 transitions. Word has length 493 [2022-11-18 20:02:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:13,202 INFO L495 AbstractCegarLoop]: Abstraction has 11102 states and 15645 transitions. [2022-11-18 20:02:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 20:02:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11102 states and 15645 transitions. [2022-11-18 20:02:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-18 20:02:13,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:13,229 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:13,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:13,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:02:13,441 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:13,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1268640679, now seen corresponding path program 1 times [2022-11-18 20:02:13,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:13,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503580602] [2022-11-18 20:02:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:13,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503580602] [2022-11-18 20:02:13,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:13,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324907472] [2022-11-18 20:02:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:13,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:13,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:13,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:02:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:15,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 5018 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:02:15,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 9 proven. 190 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-18 20:02:15,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-18 20:02:16,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324907472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:16,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:16,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-18 20:02:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98248950] [2022-11-18 20:02:16,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:16,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:02:16,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:02:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:02:16,629 INFO L87 Difference]: Start difference. First operand 11102 states and 15645 transitions. Second operand has 24 states, 24 states have (on average 10.916666666666666) internal successors, (262), 24 states have internal predecessors, (262), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) [2022-11-18 20:02:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:17,317 INFO L93 Difference]: Finished difference Result 22369 states and 31638 transitions. [2022-11-18 20:02:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:02:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.916666666666666) internal successors, (262), 24 states have internal predecessors, (262), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) Word has length 494 [2022-11-18 20:02:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:17,365 INFO L225 Difference]: With dead ends: 22369 [2022-11-18 20:02:17,366 INFO L226 Difference]: Without dead ends: 11294 [2022-11-18 20:02:17,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 964 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:02:17,413 INFO L413 NwaCegarLoop]: 3196 mSDtfsCounter, 66 mSDsluCounter, 15876 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 19072 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:17,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 19072 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:02:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2022-11-18 20:02:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 11294. [2022-11-18 20:02:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11294 states, 7818 states have (on average 1.2601688411358403) internal successors, (9852), 7999 states have internal predecessors, (9852), 3007 states have call successors, (3007), 466 states have call predecessors, (3007), 468 states have return successors, (3026), 2942 states have call predecessors, (3026), 3006 states have call successors, (3026) [2022-11-18 20:02:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11294 states to 11294 states and 15885 transitions. [2022-11-18 20:02:17,930 INFO L78 Accepts]: Start accepts. Automaton has 11294 states and 15885 transitions. Word has length 494 [2022-11-18 20:02:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:17,931 INFO L495 AbstractCegarLoop]: Abstraction has 11294 states and 15885 transitions. [2022-11-18 20:02:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.916666666666666) internal successors, (262), 24 states have internal predecessors, (262), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) [2022-11-18 20:02:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 11294 states and 15885 transitions. [2022-11-18 20:02:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2022-11-18 20:02:17,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:17,974 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:17,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:02:18,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -795177177, now seen corresponding path program 2 times [2022-11-18 20:02:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:18,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591805956] [2022-11-18 20:02:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:18,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591805956] [2022-11-18 20:02:18,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791575127] [2022-11-18 20:02:18,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:02:18,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:18,556 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:18,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:02:20,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:02:20,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2022-11-18 20:02:20,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:20,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791575127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:20,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:20,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504230341] [2022-11-18 20:02:20,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:20,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:20,239 INFO L87 Difference]: Start difference. First operand 11294 states and 15885 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 20:02:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:20,856 INFO L93 Difference]: Finished difference Result 28203 states and 39710 transitions. [2022-11-18 20:02:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 578 [2022-11-18 20:02:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:20,921 INFO L225 Difference]: With dead ends: 28203 [2022-11-18 20:02:20,921 INFO L226 Difference]: Without dead ends: 16936 [2022-11-18 20:02:20,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:20,962 INFO L413 NwaCegarLoop]: 3775 mSDtfsCounter, 3151 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3151 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:20,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3151 Valid, 6916 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16936 states. [2022-11-18 20:02:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16936 to 16933. [2022-11-18 20:02:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16933 states, 11726 states have (on average 1.2595087838990278) internal successors, (14769), 11995 states have internal predecessors, (14769), 4502 states have call successors, (4502), 698 states have call predecessors, (4502), 704 states have return successors, (4545), 4410 states have call predecessors, (4545), 4501 states have call successors, (4545) [2022-11-18 20:02:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16933 states to 16933 states and 23816 transitions. [2022-11-18 20:02:21,762 INFO L78 Accepts]: Start accepts. Automaton has 16933 states and 23816 transitions. Word has length 578 [2022-11-18 20:02:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:21,763 INFO L495 AbstractCegarLoop]: Abstraction has 16933 states and 23816 transitions. [2022-11-18 20:02:21,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 20:02:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 16933 states and 23816 transitions. [2022-11-18 20:02:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-11-18 20:02:21,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:21,820 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:21,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:22,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:22,033 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1737217347, now seen corresponding path program 1 times [2022-11-18 20:02:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:22,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83973350] [2022-11-18 20:02:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:22,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83973350] [2022-11-18 20:02:22,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578977345] [2022-11-18 20:02:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:22,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:22,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:22,541 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:22,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:02:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:24,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:02:24,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 9 proven. 946 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2022-11-18 20:02:24,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-11-18 20:02:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578977345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:26,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:26,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-18 20:02:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739098404] [2022-11-18 20:02:26,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:02:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:02:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:02:26,352 INFO L87 Difference]: Start difference. First operand 16933 states and 23816 transitions. Second operand has 48 states, 48 states have (on average 6.979166666666667) internal successors, (335), 48 states have internal predecessors, (335), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) [2022-11-18 20:02:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:27,396 INFO L93 Difference]: Finished difference Result 34415 states and 48599 transitions. [2022-11-18 20:02:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:02:27,396 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.979166666666667) internal successors, (335), 48 states have internal predecessors, (335), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) Word has length 579 [2022-11-18 20:02:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:27,656 INFO L225 Difference]: With dead ends: 34415 [2022-11-18 20:02:27,656 INFO L226 Difference]: Without dead ends: 17509 [2022-11-18 20:02:27,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:02:27,722 INFO L413 NwaCegarLoop]: 3220 mSDtfsCounter, 138 mSDsluCounter, 12729 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 15949 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:27,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 15949 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:02:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17509 states. [2022-11-18 20:02:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17509 to 17509. [2022-11-18 20:02:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17509 states, 12158 states have (on average 1.2502878762954432) internal successors, (15201), 12427 states have internal predecessors, (15201), 4646 states have call successors, (4646), 698 states have call predecessors, (4646), 704 states have return successors, (4689), 4554 states have call predecessors, (4689), 4645 states have call successors, (4689) [2022-11-18 20:02:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17509 states to 17509 states and 24536 transitions. [2022-11-18 20:02:28,686 INFO L78 Accepts]: Start accepts. Automaton has 17509 states and 24536 transitions. Word has length 579 [2022-11-18 20:02:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 17509 states and 24536 transitions. [2022-11-18 20:02:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.979166666666667) internal successors, (335), 48 states have internal predecessors, (335), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) [2022-11-18 20:02:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17509 states and 24536 transitions. [2022-11-18 20:02:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-11-18 20:02:28,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:28,747 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:28,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 20:02:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:28,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -683510239, now seen corresponding path program 1 times [2022-11-18 20:02:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:28,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281606054] [2022-11-18 20:02:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:29,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281606054] [2022-11-18 20:02:29,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:29,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482961247] [2022-11-18 20:02:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:29,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:29,248 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:29,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:02:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:31,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 5962 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:02:31,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-11-18 20:02:31,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:31,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482961247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:31,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:31,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730152197] [2022-11-18 20:02:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:31,529 INFO L87 Difference]: Start difference. First operand 17509 states and 24536 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-18 20:02:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:32,859 INFO L93 Difference]: Finished difference Result 50812 states and 71259 transitions. [2022-11-18 20:02:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:32,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 525 [2022-11-18 20:02:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:32,997 INFO L225 Difference]: With dead ends: 50812 [2022-11-18 20:02:32,997 INFO L226 Difference]: Without dead ends: 33330 [2022-11-18 20:02:33,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:33,063 INFO L413 NwaCegarLoop]: 4491 mSDtfsCounter, 2702 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:33,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 7621 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33330 states. [2022-11-18 20:02:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33330 to 33321. [2022-11-18 20:02:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33321 states, 23158 states have (on average 1.2504965886518697) internal successors, (28959), 23639 states have internal predecessors, (28959), 8843 states have call successors, (8843), 1306 states have call predecessors, (8843), 1319 states have return successors, (8930), 8693 states have call predecessors, (8930), 8842 states have call successors, (8930) [2022-11-18 20:02:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33321 states to 33321 states and 46732 transitions. [2022-11-18 20:02:34,854 INFO L78 Accepts]: Start accepts. Automaton has 33321 states and 46732 transitions. Word has length 525 [2022-11-18 20:02:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 33321 states and 46732 transitions. [2022-11-18 20:02:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-18 20:02:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 33321 states and 46732 transitions. [2022-11-18 20:02:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-11-18 20:02:34,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:34,964 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:34,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:35,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 20:02:35,179 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1494504195, now seen corresponding path program 1 times [2022-11-18 20:02:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104291557] [2022-11-18 20:02:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:35,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104291557] [2022-11-18 20:02:35,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:35,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686512785] [2022-11-18 20:02:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:35,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:35,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:35,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:02:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:38,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:02:38,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-18 20:02:38,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:38,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686512785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:38,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:38,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:38,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106498038] [2022-11-18 20:02:38,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:38,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:38,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:38,459 INFO L87 Difference]: Start difference. First operand 33321 states and 46732 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-18 20:02:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:40,281 INFO L93 Difference]: Finished difference Result 82809 states and 116173 transitions. [2022-11-18 20:02:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:40,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 560 [2022-11-18 20:02:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:40,531 INFO L225 Difference]: With dead ends: 82809 [2022-11-18 20:02:40,531 INFO L226 Difference]: Without dead ends: 49525 [2022-11-18 20:02:40,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:40,683 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 2849 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 7148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:40,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 7148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49525 states. [2022-11-18 20:02:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49525 to 49447. [2022-11-18 20:02:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49447 states, 34381 states have (on average 1.250254501032547) internal successors, (42985), 35095 states have internal predecessors, (42985), 13107 states have call successors, (13107), 1939 states have call predecessors, (13107), 1958 states have return successors, (13236), 12880 states have call predecessors, (13236), 13106 states have call successors, (13236) [2022-11-18 20:02:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49447 states to 49447 states and 69328 transitions. [2022-11-18 20:02:43,154 INFO L78 Accepts]: Start accepts. Automaton has 49447 states and 69328 transitions. Word has length 560 [2022-11-18 20:02:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 49447 states and 69328 transitions. [2022-11-18 20:02:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-18 20:02:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 49447 states and 69328 transitions. [2022-11-18 20:02:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-11-18 20:02:43,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:43,480 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:43,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:43,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:43,681 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 107579637, now seen corresponding path program 1 times [2022-11-18 20:02:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:43,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617978116] [2022-11-18 20:02:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:43,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617978116] [2022-11-18 20:02:43,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559811145] [2022-11-18 20:02:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:43,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:43,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:43,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:02:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:46,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 6183 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:46,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-18 20:02:46,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:46,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559811145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:46,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:46,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710134627] [2022-11-18 20:02:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:46,434 INFO L87 Difference]: Start difference. First operand 49447 states and 69328 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-18 20:02:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:48,885 INFO L93 Difference]: Finished difference Result 98866 states and 138620 transitions. [2022-11-18 20:02:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 576 [2022-11-18 20:02:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:49,290 INFO L225 Difference]: With dead ends: 98866 [2022-11-18 20:02:49,290 INFO L226 Difference]: Without dead ends: 49447 [2022-11-18 20:02:49,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:49,447 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 0 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:49,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6349 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:02:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49447 states. [2022-11-18 20:02:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49447 to 49447. [2022-11-18 20:02:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49447 states, 34381 states have (on average 1.2499927285419272) internal successors, (42976), 35095 states have internal predecessors, (42976), 13107 states have call successors, (13107), 1939 states have call predecessors, (13107), 1958 states have return successors, (13236), 12880 states have call predecessors, (13236), 13106 states have call successors, (13236) [2022-11-18 20:02:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49447 states to 49447 states and 69319 transitions. [2022-11-18 20:02:51,768 INFO L78 Accepts]: Start accepts. Automaton has 49447 states and 69319 transitions. Word has length 576 [2022-11-18 20:02:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:51,769 INFO L495 AbstractCegarLoop]: Abstraction has 49447 states and 69319 transitions. [2022-11-18 20:02:51,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-18 20:02:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 49447 states and 69319 transitions. [2022-11-18 20:02:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-11-18 20:02:51,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:51,891 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:51,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 20:02:52,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:52,107 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 293435357, now seen corresponding path program 1 times [2022-11-18 20:02:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:52,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998130194] [2022-11-18 20:02:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:52,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:52,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998130194] [2022-11-18 20:02:52,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:02:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794719787] [2022-11-18 20:02:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:52,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:52,401 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:52,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:02:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 6261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:55,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-11-18 20:02:55,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:55,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794719787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:55,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:55,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:02:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346384479] [2022-11-18 20:02:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:55,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:02:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:02:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:55,375 INFO L87 Difference]: Start difference. First operand 49447 states and 69319 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-18 20:02:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:57,823 INFO L93 Difference]: Finished difference Result 103813 states and 146411 transitions. [2022-11-18 20:02:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:02:57,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 593 [2022-11-18 20:02:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:58,100 INFO L225 Difference]: With dead ends: 103813 [2022-11-18 20:02:58,101 INFO L226 Difference]: Without dead ends: 54403 [2022-11-18 20:02:58,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:02:58,268 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 434 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 6929 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:58,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 6929 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:02:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54403 states. [2022-11-18 20:03:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54403 to 49456. [2022-11-18 20:03:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49456 states, 34390 states have (on average 1.2499273044489678) internal successors, (42985), 35104 states have internal predecessors, (42985), 13107 states have call successors, (13107), 1939 states have call predecessors, (13107), 1958 states have return successors, (13236), 12880 states have call predecessors, (13236), 13106 states have call successors, (13236) [2022-11-18 20:03:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49456 states to 49456 states and 69328 transitions. [2022-11-18 20:03:01,280 INFO L78 Accepts]: Start accepts. Automaton has 49456 states and 69328 transitions. Word has length 593 [2022-11-18 20:03:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:01,281 INFO L495 AbstractCegarLoop]: Abstraction has 49456 states and 69328 transitions. [2022-11-18 20:03:01,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-18 20:03:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 49456 states and 69328 transitions. [2022-11-18 20:03:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-11-18 20:03:01,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:01,410 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:01,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:03:01,632 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 227200716, now seen corresponding path program 1 times [2022-11-18 20:03:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724966465] [2022-11-18 20:03:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724966465] [2022-11-18 20:03:01,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:03:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235971936] [2022-11-18 20:03:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:01,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:01,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4171e0a9-6e67-44fa-b5b4-0a12e0daa6ac/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:03:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:04,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 6287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-11-18 20:03:04,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:04,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235971936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:04,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:04,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:03:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531731995] [2022-11-18 20:03:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:04,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:04,762 INFO L87 Difference]: Start difference. First operand 49456 states and 69328 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-18 20:03:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:07,486 INFO L93 Difference]: Finished difference Result 98875 states and 138611 transitions. [2022-11-18 20:03:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 594 [2022-11-18 20:03:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:07,854 INFO L225 Difference]: With dead ends: 98875 [2022-11-18 20:03:07,854 INFO L226 Difference]: Without dead ends: 49456 [2022-11-18 20:03:08,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:08,019 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 3058 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 3174 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 [2022-11-18 20:03:08,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 3174 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49456 states.