./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ --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 32bit --witnessprinter.graph.data.programhash 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 --- 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-dbf71c6-m [2022-10-17 11:06:47,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:06:47,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:06:47,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:06:47,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:06:47,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:06:47,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:06:47,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:06:47,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:06:47,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:06:47,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:06:47,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:06:47,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:06:47,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:06:47,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:06:47,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:06:47,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:06:47,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:06:47,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:06:47,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:06:47,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:06:47,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:06:47,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:06:47,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:06:47,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:06:47,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:06:47,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:06:47,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:06:47,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:06:47,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:06:47,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:06:47,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:06:47,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:06:47,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:06:47,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:06:47,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:06:47,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:06:47,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:06:47,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:06:47,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:06:47,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:06:47,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:06:47,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:06:47,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:06:47,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:06:47,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:06:47,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:06:47,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:06:47,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:06:47,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:06:47,883 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:06:47,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:06:47,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:06:47,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:06:47,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:06:47,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:06:47,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:06:47,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:06:47,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:06:47,887 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:06:47,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:06:47,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:06:47,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:06:47,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:06:47,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:06:47,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:06:47,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:47,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:06:47,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:06:47,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:06:47,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:06:47,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:06:47,892 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:06:47,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:06:47,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:06:47,893 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_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 [2022-10-17 11:06:48,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:06:48,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:06:48,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:06:48,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:06:48,263 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:06:48,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2022-10-17 11:06:48,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/data/17c07e1fb/9921c97a0c0c4740b05f74497836b7a6/FLAGcf631991e [2022-10-17 11:06:49,087 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:06:49,089 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2022-10-17 11:06:49,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/data/17c07e1fb/9921c97a0c0c4740b05f74497836b7a6/FLAGcf631991e [2022-10-17 11:06:49,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/data/17c07e1fb/9921c97a0c0c4740b05f74497836b7a6 [2022-10-17 11:06:49,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:06:49,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:06:49,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:49,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:06:49,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:06:49,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:49" (1/1) ... [2022-10-17 11:06:49,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a77c098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:49, skipping insertion in model container [2022-10-17 11:06:49,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:49" (1/1) ... [2022-10-17 11:06:49,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:06:49,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:06:49,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2022-10-17 11:06:49,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:49,975 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:06:50,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2022-10-17 11:06:50,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:50,233 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:06:50,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50 WrapperNode [2022-10-17 11:06:50,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:50,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:50,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:06:50,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:06:50,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,380 INFO L138 Inliner]: procedures = 138, calls = 254, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1175 [2022-10-17 11:06:50,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:50,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:06:50,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:06:50,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:06:50,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:06:50,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:06:50,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:06:50,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:06:50,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (1/1) ... [2022-10-17 11:06:50,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:50,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:50,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:06:50,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:06:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 11:06:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 11:06:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-10-17 11:06:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-10-17 11:06:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 11:06:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 11:06:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-10-17 11:06:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-10-17 11:06:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 11:06:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 11:06:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 11:06:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 11:06:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-10-17 11:06:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-10-17 11:06:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 11:06:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 11:06:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 11:06:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-10-17 11:06:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 11:06:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 11:06:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 11:06:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 11:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 11:06:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-10-17 11:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-10-17 11:06:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 11:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 11:06:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 11:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 11:06:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 11:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 11:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 11:06:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 11:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 11:06:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 11:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 11:06:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 11:06:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 11:06:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 11:06:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 11:06:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 11:06:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:06:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 11:06:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 11:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-10-17 11:06:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-10-17 11:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:06:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:06:50,945 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:06:50,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:06:52,165 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:06:52,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:06:52,178 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:06:52,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:52 BoogieIcfgContainer [2022-10-17 11:06:52,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:06:52,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:06:52,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:06:52,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:06:52,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:06:49" (1/3) ... [2022-10-17 11:06:52,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb9bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:52, skipping insertion in model container [2022-10-17 11:06:52,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:50" (2/3) ... [2022-10-17 11:06:52,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb9bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:52, skipping insertion in model container [2022-10-17 11:06:52,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:52" (3/3) ... [2022-10-17 11:06:52,190 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product35.cil.c [2022-10-17 11:06:52,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:06:52,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:06:52,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:06:52,298 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;@194c6b25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:06:52,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:06:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 363 states have (on average 1.5316804407713498) internal successors, (556), 368 states have internal predecessors, (556), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-10-17 11:06:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-17 11:06:52,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:52,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:52,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -114835624, now seen corresponding path program 1 times [2022-10-17 11:06:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:52,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90183710] [2022-10-17 11:06:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:06:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:06:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:06:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 11:06:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 11:06:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 11:06:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 11:06:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 11:06:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 11:06:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 11:06:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 11:06:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 11:06:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 11:06:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 11:06:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-17 11:06:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-17 11:06:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 11:06:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-17 11:06:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-17 11:06:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:53,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90183710] [2022-10-17 11:06:53,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90183710] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:53,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727825844] [2022-10-17 11:06:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:53,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:53,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:53,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:06:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:53,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 11:06:53,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-17 11:06:53,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:53,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727825844] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:53,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:53,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-10-17 11:06:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449963328] [2022-10-17 11:06:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:54,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:06:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:06:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:06:54,048 INFO L87 Difference]: Start difference. First operand has 471 states, 363 states have (on average 1.5316804407713498) internal successors, (556), 368 states have internal predecessors, (556), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 11:06:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:54,141 INFO L93 Difference]: Finished difference Result 744 states and 1102 transitions. [2022-10-17 11:06:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:06:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 154 [2022-10-17 11:06:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:54,173 INFO L225 Difference]: With dead ends: 744 [2022-10-17 11:06:54,173 INFO L226 Difference]: Without dead ends: 464 [2022-10-17 11:06:54,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:06:54,185 INFO L413 NwaCegarLoop]: 706 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, 706 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 [2022-10-17 11:06:54,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:54,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-10-17 11:06:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-10-17 11:06:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 357 states have (on average 1.526610644257703) internal successors, (545), 361 states have internal predecessors, (545), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-10-17 11:06:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 698 transitions. [2022-10-17 11:06:54,275 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 698 transitions. Word has length 154 [2022-10-17 11:06:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:54,277 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 698 transitions. [2022-10-17 11:06:54,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 11:06:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 698 transitions. [2022-10-17 11:06:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-17 11:06:54,283 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:54,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:54,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 11:06:54,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 11:06:54,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1927707012, now seen corresponding path program 1 times [2022-10-17 11:06:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:54,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016721978] [2022-10-17 11:06:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:54,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:06:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:06:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:06:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 11:06:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 11:06:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 11:06:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 11:06:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 11:06:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 11:06:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 11:06:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 11:06:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 11:06:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 11:06:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 11:06:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-17 11:06:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-17 11:06:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 11:06:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-17 11:06:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-17 11:06:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:55,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016721978] [2022-10-17 11:06:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016721978] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842154921] [2022-10-17 11:06:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:55,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:55,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:55,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:06:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:55,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:06:55,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-17 11:06:55,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:55,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842154921] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:55,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:55,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 11:06:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698638601] [2022-10-17 11:06:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:06:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:06:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:06:55,436 INFO L87 Difference]: Start difference. First operand 464 states and 698 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 11:06:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:55,532 INFO L93 Difference]: Finished difference Result 734 states and 1080 transitions. [2022-10-17 11:06:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:06:55,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2022-10-17 11:06:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:55,545 INFO L225 Difference]: With dead ends: 734 [2022-10-17 11:06:55,545 INFO L226 Difference]: Without dead ends: 467 [2022-10-17 11:06:55,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:06:55,549 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1390 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 [2022-10-17 11:06:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1390 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-10-17 11:06:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 466. [2022-10-17 11:06:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.5236768802228413) internal successors, (547), 363 states have internal predecessors, (547), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-10-17 11:06:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 700 transitions. [2022-10-17 11:06:55,621 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 700 transitions. Word has length 155 [2022-10-17 11:06:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 700 transitions. [2022-10-17 11:06:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 11:06:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 700 transitions. [2022-10-17 11:06:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-10-17 11:06:55,630 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:55,630 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 11:06:55,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:55,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash 18662654, now seen corresponding path program 1 times [2022-10-17 11:06:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557104528] [2022-10-17 11:06:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:06:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:06:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:06:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 11:06:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 11:06:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 11:06:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 11:06:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 11:06:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 11:06:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 11:06:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 11:06:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-17 11:06:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-17 11:06:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-17 11:06:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-10-17 11:06:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 11:06:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:56,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557104528] [2022-10-17 11:06:56,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557104528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:56,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356910303] [2022-10-17 11:06:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:56,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:56,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:56,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:06:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:56,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:06:56,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-17 11:06:56,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:56,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356910303] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:56,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:56,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 11:06:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855275428] [2022-10-17 11:06:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:56,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:06:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:06:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:06:56,619 INFO L87 Difference]: Start difference. First operand 466 states and 700 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-10-17 11:06:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:56,676 INFO L93 Difference]: Finished difference Result 985 states and 1500 transitions. [2022-10-17 11:06:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:06:56,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2022-10-17 11:06:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:56,683 INFO L225 Difference]: With dead ends: 985 [2022-10-17 11:06:56,683 INFO L226 Difference]: Without dead ends: 546 [2022-10-17 11:06:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:06:56,690 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 142 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:56,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1378 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-10-17 11:06:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 538. [2022-10-17 11:06:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.5443645083932853) internal successors, (644), 421 states have internal predecessors, (644), 91 states have call successors, (91), 29 states have call predecessors, (91), 29 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2022-10-17 11:06:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 825 transitions. [2022-10-17 11:06:56,737 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 825 transitions. Word has length 145 [2022-10-17 11:06:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:56,738 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 825 transitions. [2022-10-17 11:06:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-10-17 11:06:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 825 transitions. [2022-10-17 11:06:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-17 11:06:56,749 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:56,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 11:06:56,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:56,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:56,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:56,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1932418513, now seen corresponding path program 1 times [2022-10-17 11:06:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:56,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892904756] [2022-10-17 11:06:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:06:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:06:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:06:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 11:06:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 11:06:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 11:06:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 11:06:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 11:06:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 11:06:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 11:06:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 11:06:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 11:06:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-17 11:06:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-17 11:06:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-17 11:06:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-10-17 11:06:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 11:06:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-10-17 11:06:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-17 11:06:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892904756] [2022-10-17 11:06:57,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892904756] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165967946] [2022-10-17 11:06:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:57,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:57,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:57,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:57,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:06:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:57,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 11:06:57,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-17 11:06:57,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165967946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:57,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:57,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 11:06:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763360661] [2022-10-17 11:06:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:57,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:06:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:06:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:06:57,771 INFO L87 Difference]: Start difference. First operand 538 states and 825 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 11:06:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:57,854 INFO L93 Difference]: Finished difference Result 1067 states and 1640 transitions. [2022-10-17 11:06:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:06:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 165 [2022-10-17 11:06:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:57,860 INFO L225 Difference]: With dead ends: 1067 [2022-10-17 11:06:57,860 INFO L226 Difference]: Without dead ends: 540 [2022-10-17 11:06:57,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:06:57,864 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 160 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2573 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-10-17 11:06:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-10-17 11:06:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.5430622009569377) internal successors, (645), 423 states have internal predecessors, (645), 91 states have call successors, (91), 29 states have call predecessors, (91), 30 states have return successors, (92), 89 states have call predecessors, (92), 90 states have call successors, (92) [2022-10-17 11:06:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 828 transitions. [2022-10-17 11:06:57,896 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 828 transitions. Word has length 165 [2022-10-17 11:06:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:57,897 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 828 transitions. [2022-10-17 11:06:57,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 11:06:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 828 transitions. [2022-10-17 11:06:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-17 11:06:57,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:57,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:57,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:58,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -174520300, now seen corresponding path program 1 times [2022-10-17 11:06:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768635155] [2022-10-17 11:06:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:06:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 11:06:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 11:06:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 11:06:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 11:06:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 11:06:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 11:06:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 11:06:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 11:06:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 11:06:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 11:06:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 11:06:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-17 11:06:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-10-17 11:06:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-17 11:06:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 11:06:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768635155] [2022-10-17 11:06:58,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768635155] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264874439] [2022-10-17 11:06:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:58,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:58,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:58,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:58,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:06:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:58,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 11:06:58,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 11:06:58,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:58,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264874439] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:58,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:58,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-10-17 11:06:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204011288] [2022-10-17 11:06:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:58,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:06:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:06:58,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 11:06:58,850 INFO L87 Difference]: Start difference. First operand 540 states and 828 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 11:06:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:58,964 INFO L93 Difference]: Finished difference Result 1069 states and 1645 transitions. [2022-10-17 11:06:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:06:58,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2022-10-17 11:06:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:58,970 INFO L225 Difference]: With dead ends: 1069 [2022-10-17 11:06:58,970 INFO L226 Difference]: Without dead ends: 542 [2022-10-17 11:06:58,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-10-17 11:06:58,974 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 159 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:58,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2562 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-10-17 11:06:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2022-10-17 11:06:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.541766109785203) internal successors, (646), 425 states have internal predecessors, (646), 91 states have call successors, (91), 29 states have call predecessors, (91), 31 states have return successors, (97), 89 states have call predecessors, (97), 90 states have call successors, (97) [2022-10-17 11:06:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 834 transitions. [2022-10-17 11:06:59,011 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 834 transitions. Word has length 147 [2022-10-17 11:06:59,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:59,011 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 834 transitions. [2022-10-17 11:06:59,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 11:06:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 834 transitions. [2022-10-17 11:06:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 11:06:59,016 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:59,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 11:06:59,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-17 11:06:59,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:59,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash 833805250, now seen corresponding path program 1 times [2022-10-17 11:06:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:59,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082508091] [2022-10-17 11:06:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:06:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:06:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:06:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:06:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:06:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 11:06:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 11:06:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 11:06:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 11:06:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 11:06:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 11:06:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 11:06:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 11:06:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 11:06:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-17 11:06:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-17 11:06:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-10-17 11:06:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 11:06:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-17 11:06:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-17 11:06:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-10-17 11:06:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-17 11:06:59,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082508091] [2022-10-17 11:06:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082508091] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:59,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:59,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 11:06:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91076926] [2022-10-17 11:06:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 11:06:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 11:06:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:06:59,548 INFO L87 Difference]: Start difference. First operand 542 states and 834 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 11:07:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:02,949 INFO L93 Difference]: Finished difference Result 1299 states and 2025 transitions. [2022-10-17 11:07:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 11:07:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 167 [2022-10-17 11:07:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:02,959 INFO L225 Difference]: With dead ends: 1299 [2022-10-17 11:07:02,959 INFO L226 Difference]: Without dead ends: 780 [2022-10-17 11:07:02,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 11:07:02,964 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1733 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:02,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 1892 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 3143 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 11:07:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-10-17 11:07:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 542. [2022-10-17 11:07:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.541766109785203) internal successors, (646), 425 states have internal predecessors, (646), 91 states have call successors, (91), 29 states have call predecessors, (91), 31 states have return successors, (96), 89 states have call predecessors, (96), 90 states have call successors, (96) [2022-10-17 11:07:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 833 transitions. [2022-10-17 11:07:03,079 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 833 transitions. Word has length 167 [2022-10-17 11:07:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:03,079 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 833 transitions. [2022-10-17 11:07:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 11:07:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 833 transitions. [2022-10-17 11:07:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-10-17 11:07:03,084 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:03,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:03,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:07:03,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1677143293, now seen corresponding path program 1 times [2022-10-17 11:07:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409280930] [2022-10-17 11:07:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:07:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:07:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:07:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:07:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:07:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 11:07:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 11:07:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 11:07:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 11:07:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 11:07:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 11:07:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 11:07:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 11:07:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 11:07:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-17 11:07:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-10-17 11:07:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-17 11:07:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 11:07:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 11:07:03,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409280930] [2022-10-17 11:07:03,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409280930] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:03,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:03,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 11:07:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677131666] [2022-10-17 11:07:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:03,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 11:07:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 11:07:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:07:03,393 INFO L87 Difference]: Start difference. First operand 542 states and 833 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 11:07:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:07,031 INFO L93 Difference]: Finished difference Result 1301 states and 2028 transitions. [2022-10-17 11:07:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 11:07:07,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2022-10-17 11:07:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:07,041 INFO L225 Difference]: With dead ends: 1301 [2022-10-17 11:07:07,041 INFO L226 Difference]: Without dead ends: 782 [2022-10-17 11:07:07,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 11:07:07,045 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1728 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 3142 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 3142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:07,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 1891 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 3142 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-17 11:07:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-10-17 11:07:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 544. [2022-10-17 11:07:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 420 states have (on average 1.5404761904761906) internal successors, (647), 427 states have internal predecessors, (647), 91 states have call successors, (91), 29 states have call predecessors, (91), 32 states have return successors, (98), 89 states have call predecessors, (98), 90 states have call successors, (98) [2022-10-17 11:07:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 836 transitions. [2022-10-17 11:07:07,111 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 836 transitions. Word has length 149 [2022-10-17 11:07:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:07,111 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 836 transitions. [2022-10-17 11:07:07,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 11:07:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 836 transitions. [2022-10-17 11:07:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-10-17 11:07:07,116 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:07,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 11:07:07,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:07:07,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1954260473, now seen corresponding path program 1 times [2022-10-17 11:07:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607338771] [2022-10-17 11:07:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:07:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:07:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:07:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:07:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:07:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 11:07:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 11:07:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 11:07:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 11:07:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 11:07:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 11:07:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 11:07:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 11:07:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 11:07:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-17 11:07:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-10-17 11:07:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-17 11:07:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-10-17 11:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-10-17 11:07:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-17 11:07:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-17 11:07:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-17 11:07:07,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:07,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607338771] [2022-10-17 11:07:07,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607338771] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:07,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:07,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 11:07:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707602206] [2022-10-17 11:07:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 11:07:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 11:07:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:07:07,480 INFO L87 Difference]: Start difference. First operand 544 states and 836 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 11:07:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:11,857 INFO L93 Difference]: Finished difference Result 1299 states and 2023 transitions. [2022-10-17 11:07:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:07:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 169 [2022-10-17 11:07:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:11,865 INFO L225 Difference]: With dead ends: 1299 [2022-10-17 11:07:11,866 INFO L226 Difference]: Without dead ends: 782 [2022-10-17 11:07:11,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 11:07:11,870 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1878 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 5627 mSolverCounterSat, 814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 6441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 5627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:11,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 2263 Invalid, 6441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 5627 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-10-17 11:07:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-10-17 11:07:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 544. [2022-10-17 11:07:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 420 states have (on average 1.5404761904761906) internal successors, (647), 427 states have internal predecessors, (647), 91 states have call successors, (91), 29 states have call predecessors, (91), 32 states have return successors, (97), 89 states have call predecessors, (97), 90 states have call successors, (97) [2022-10-17 11:07:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 835 transitions. [2022-10-17 11:07:11,945 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 835 transitions. Word has length 169 [2022-10-17 11:07:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:11,945 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 835 transitions. [2022-10-17 11:07:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 11:07:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 835 transitions. [2022-10-17 11:07:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-17 11:07:11,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:11,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:11,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:07:11,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1341133593, now seen corresponding path program 1 times [2022-10-17 11:07:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485964483] [2022-10-17 11:07:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:07:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:07:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:07:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:07:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:07:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 11:07:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 11:07:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 11:07:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 11:07:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 11:07:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 11:07:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 11:07:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 11:07:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-10-17 11:07:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-10-17 11:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-17 11:07:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-10-17 11:07:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-10-17 11:07:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 11:07:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:12,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485964483] [2022-10-17 11:07:12,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485964483] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:12,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:12,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 11:07:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159467009] [2022-10-17 11:07:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:12,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 11:07:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 11:07:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:07:12,290 INFO L87 Difference]: Start difference. First operand 544 states and 835 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-10-17 11:07:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:16,357 INFO L93 Difference]: Finished difference Result 1301 states and 2029 transitions. [2022-10-17 11:07:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:07:16,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2022-10-17 11:07:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:16,368 INFO L225 Difference]: With dead ends: 1301 [2022-10-17 11:07:16,368 INFO L226 Difference]: Without dead ends: 784 [2022-10-17 11:07:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 11:07:16,375 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 1874 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 5660 mSolverCounterSat, 800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 6460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 5660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:16,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 2262 Invalid, 6460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 5660 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-17 11:07:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-10-17 11:07:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 546. [2022-10-17 11:07:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 421 states have (on average 1.5391923990498813) internal successors, (648), 429 states have internal predecessors, (648), 91 states have call successors, (91), 29 states have call predecessors, (91), 33 states have return successors, (102), 89 states have call predecessors, (102), 90 states have call successors, (102) [2022-10-17 11:07:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 841 transitions. [2022-10-17 11:07:16,480 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 841 transitions. Word has length 151 [2022-10-17 11:07:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:16,480 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 841 transitions. [2022-10-17 11:07:16,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-10-17 11:07:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 841 transitions. [2022-10-17 11:07:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-10-17 11:07:16,484 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:16,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 11:07:16,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:07:16,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -77374292, now seen corresponding path program 1 times [2022-10-17 11:07:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:16,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776250247] [2022-10-17 11:07:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:07:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:07:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:07:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:07:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:07:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 11:07:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 11:07:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 11:07:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 11:07:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 11:07:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 11:07:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 11:07:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 11:07:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 11:07:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 11:07:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-17 11:07:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-10-17 11:07:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-10-17 11:07:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 11:07:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-10-17 11:07:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-17 11:07:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-17 11:07:16,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:16,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776250247] [2022-10-17 11:07:16,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776250247] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:07:16,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56158790] [2022-10-17 11:07:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:16,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:07:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:16,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:07:16,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4dec0d9-9a7f-4a72-8635-6a57287d09b3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process